工学修士, 東京都立大学

工学博士, 東北大学

Poynting vector.

near electromagnetic field

four-septum cell

waveguide testing method

susceptibility

immunity

multi-layer board

printed circuit board

electromagnetic emission

transmission line

Electromagnetic compatibility

ポインティングベクトル

近傍電磁界

４セプテムセル

導波路試験法

感受性

イミュニティ

多層基板

プリント回路基板

電磁妨害波

伝送線路

環境電磁工学

Mar. 1970
Tokyo Metropolitan University, Graduate School, Division of Engineering, 電気工学専攻

Mar. 1966
The University of Electro-Communications, Faculty of Electro Communications, 電波通信学科

2001 - 2004
EMC-S Japan chapter委員長, Society

2001
査読委員, 電子情報通信学会, Society

1999 - 2000
環境電磁工学専門委員会委員長, 電子情報通信学会, Society

1998 - 1999
電磁特性技術委員会委員長, エレクトロニクス実装学会, Society

1998
Associate Editor, Society

1995 - 1995
理事, 回路実装学会, Society

Crosstalk analysis method for two bent lines on a PCB using a circuit model
Sang Wook Park; Fengchao Xiao; Dong Chul Park; Yoshio Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E90B, 6, 1313-1321, Jun. 2007, Peer-reviwed, We propose a method of crosstalk analysis for two bent transmission lines with vias at both ends on a PCB using a circuit-concept approach in the quasi-static condition. In this condition, the electromagnetic fields can be approximately estimated by the quasi-static terms of the accurate Green's function in an inhomogeneous medium. Thus we obtain a circuit model in an ABCD matrix by taking account of the fields generated by a longitudinal line and a vertical via on a PCB. To verify the proposed approach, we conducted some experiments and compared our approach's results with measured results and a commercial electromagnetic solver's results.
Scientific journal, English

Time domain crosstalk characteristics between single-ended and differential lines
Fengchao Xiao; Ryota Hashimoto; Kimitoshi Murano; Yoshio Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E90B, 6, 1305-1312, Jun. 2007, Peer-reviwed, The crosstalks between a single-ended line and a differential pair in parallel are analyzed using telegrapher's equations for multiconductor lines. The crosstalk from the single-ended trace to the differential pair is estimated at shunt-arm resistors in T or H termination networks. The analysis is conducted by incorporating the termination conditions with the solution of the telegrapher's equations. The time-domain characteristics of the crosstalk are obtained by using the fast inverse Laplace transform. The measurements are conducted easily by using a single-ended digital oscilloscope since the crosstalk is evaluated on the shunt-arm resistors. Both the calculated and measured results are presented, and the characteristics of the crosstalk are also investigated qualitatively.
Scientific journal, English

Application of rotating-EM field to four-septum TEM cell for radiated immunity/susceptibility test
Kimitoshi Murano; Hiroko Kawahara; Fengchao Xiao; Majid Tayarani; Yoshio Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E90B, 6, 1322-1328, Jun. 2007, Peer-reviwed, A new radio-frequency (RF) radiated immunity/susceptibility test method using four-septum TEM cell is proposed. A rotating-EM field can be generated inside the cell by feeding four-different RF DSB-SC signals to four septa arranged in the cell. Since a polarization plane of the rotating-EM field rotates in a low speed, the immunity/susceptibility test for the EM field with various polarizations can be conducted more easily. In this paper, a technique for generating the rotating-EM field in the cell is investigated. The basic characteristics of the cell and the rotating-EM field by using the technique are clarified. To verify the validity of this test method, a RF radiated susceptibility of a printed Circuit board is measured. The measured results are verified by comparing with the theoretical results based on modified telegrapher's equations.
Scientific journal, English

Crosstalk analysis for two bent lines using circuit model
Sang Wook Park; Fengchao Xiao; Dong Chul Park; Yoshio Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E90B, 2, 323-330, Feb. 2007, Peer-reviwed, The crosstalk phenomenon, wich occurs between transmission lines, is caused by electromagnetic fields of currents flowing through the lines. Crosstalk between two bent lines is studied by using a set of solutions of modified telegrapher's equations. By expressing electromagnetic fields in terms of voltages and currents in the line ends, the resultant network function in the form of an ABCD matrix is obtained. Electromagnetic fields caused by currents flowing in risers at transmission line ends are taken into account in addition to those fields in line sections. The validity of the proposed approach was confirmed by comparing experimental results with computed results and those simulated by a commercial electromagnetic solver for some bent-line models.
Scientific journal, English

グランド層に入ったスリットをまたぐトレース線路間クロストーク解析モデルとステッチングキャパシタによる低減効果
肖鳳超; 中田洋平; 村野公俊; 上芳夫
電子情報通信学会論文誌C, J89-C, 11, 885-893, Nov. 2006, Peer-reviwed
Scientific journal, Japanese

ディファレンシャルモード線路の端子負荷回路で評価するシングルエンド励振線路からのクロストーク
當山俊一郎; 村野公俊; 肖鳳超; 上芳夫
電子情報通信学会論文誌C, J89-C, 11, 894-901, Nov. 2006, Peer-reviwed
Scientific journal, Japanese

Equivalent two-port network for indoor outlet and its application
Y. Kami; F. Xiao
Proc. of International Symposium on Electromagnetic Compatibility Europe, 420-425, Sep. 2006, Peer-reviwed
International conference proceedings, English

Methods to reduce coupling between traces over split ground and power planes
F. Xiao; Y. Kami
Proc. of International Symposium on Electromagnetic Compatibility Europe, 525-530, Sep. 2006, Peer-reviwed
International conference proceedings, English

A generation method of rotating-EM field using four-septum TEM cell and its basic characteristics
K. Murano; M. Tayarani; H. Kawahara; F. Xiao; Y. Kami
Proc. of 2006 IEEE Intern. Symp. EMC, TH-AM-I2, Aug. 2006, Peer-reviwed
International conference proceedings, English

Analysis of coupling between two bent transmission lines by a circuit-concept approach
S.W. Park; F. Xiao; D.C. Park; Y. Kami
Proc. of CEEM'2006, 736-739, Aug. 2006, Peer-reviwed
International conference proceedings, English

Common- and differential-mode components at asymmetric pattern-layout lines
Y. Kami; F. Xiao
Proc. of PIERS 2006-Tokyo, 86-89, Aug. 2006, Peer-reviwed
International conference proceedings, English

Crosstalk analysis of two bent lines above a ground plane
S.W. Park; F. Xiao; D.C. Park; Y. Kami
Proc. of PIERS 2006-Tokyo, 99-102, Aug. 2006, Peer-reviwed
International conference proceedings, English

Crosstalk characteristics between single-end and differential-mode lines
S. Toyama; K. Murano; F. Xiao; Y. Kami
Proc. of 2005 Korea-Japan Microwave Workshop, 107-110, Oct. 2005
International conference proceedings, English

A new generation method of radiated immunity/susceptibility test
K. Murano; M. Tayarani; F. Xiao; Y. Kami
Proc. of ISAP2005, 3-6, Aug. 2005, Peer-reviwed
International conference proceedings, English

Line equations in chain-matrix expression for a single bent line and two bent parallel lines
Y. Kami; F. Xiao
Proc. of ISAP2005, 11-14, Aug. 2005, Peer-reviwed
International conference proceedings, English

A new generation method of slowly rotating-EM fields for radiated immunity/susceptibility test
K Murano; M Tayarani; FC Xiao; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E88B, 8, 3133-3139, Aug. 2005, Peer-reviwed, A new generation method of rotating electromagnetic fields (rotating-EM fields) for radio frequency (RF) radiated immunity/susceptibility test and its basic characteristics are described. Two different double-side-band suppressed-carrier (DSB-SC) signals are required for generating the slowly rotating-EM field for the immunity/susceptibility test. These DSB-SC signals are generated by a DSB-SC-signal generator based on the new concept which consists of voltage-variable attenuators, bi-phase switches, a direct-digital synthesizer and a micro processor. Using the DSB-SC-signal generator, the DSB-SC signal of arbitrary RF frequency can be generated more easily than the conventional system. In this paper, the principle of the DSB-SC signal generator and the basic characteristics of the DSB-SC signals generated by the generator are clarified. The measured basic characteristics of the rotating-EM field generated using the new concept are shown and it is confirmed that the field can be applied for the RF immunity/susceptibility test. In addition, the susceptibility test of an equipment under test is made as an example, the validity of our proposed system is established.
Scientific journal, English

Design of a four-septum TEM cell for immunity/susceptibility test
FC Xiao; Y Suganuma; K Murano; M Tayarani; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E88B, 8, 3146-3151, Aug. 2005, Peer-reviwed, The four-septum transverse electromagnetic (TEM) cell is like the traditional TEM cell but has four plate-like septa in the internal space. A slowly rotating field can be easily generated in the four-septum TEM cell, thus radiated immunity/susceptibility characteristics of an EUT under arbitrary specific polarizations can be measured without rearranging the test setup. A design approach for the four-septum TEM cell is discussed in this paper. The characteristics of the cell are analyzed based on the telegrapher's equation and decomposition of the transmission mode into four independent modes. Then a design approach is given based on the analytical results. A prototype of the four-septum TEM cell based on the design is constructed and the characteristics of the prototype cell are experimentally evaluated. The validity and effectiveness of the design approach are confirmed.
Scientific journal, English

Characteristics of electrically long two-conductor lines with inhomogeneous media
O Makino; FC Xiao; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E88B, 7, 3028-3035, Jul. 2005, Peer-reviwed, Crosstalk or coupling phenomenon between two parallel conductors with a ground or reference conductor is well known in electromagnetic compatibility and microwave circuit fields. In this paper we consider the characteristics of a long two-conductor line embedded in an inhomogeneous medium while taking account of the difference between two phase constants in independent propagation modes of two parallel lines. The characteristics of near-end and far-end crosstalk and of through-end transmission are discussed for frequencies up to more than the frequency where the line length is 10 times the wavelength. Interesting properties, such as very strong and null crosstalk phenomena that occur at the far end and non-transmission at the through end, appear in the envelope characteristics. The reason for these properties is clarified by making theoretical and experimental investigations.
Scientific journal, English

A new generation method of radiated immunity/susceptibility test
K. Murano; M. Tayarani; F. Xiao; Y. Kami
Proc. of 21st IEEE Instrumentation and Measurement Technology Conference, 657-661, May 2005, Peer-reviwed
International conference proceedings, English

Network functions for coupling analysis of multi-conductor lines in a printed circuit board backed with a ground plane
Y. Kami; F. Xiao
Proc. of 2005 Pan Pacific EMC Joint Meeting, 9, May 2005
International conference proceedings, English

マイクロ波電力伝送用超大型アレーアンテナの構成法及び放射特性の解析
菅原章; 高野忠; 花山英治; 上芳夫
電子情報通信学会論文誌 B, J88-B, 2, 432-441, Feb. 2005, Peer-reviwed
Scientific journal, Japanese

A prediction method of common-mode excitation on a printed circuit board having a signal trace near the ground edge
T Watanabe; H Fujihara; O Wada; R Koga; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E87B, 8, 2327-2334, Aug. 2004, Peer-reviwed, Common-mode excitation caused by an imperfect ground plane on a printed circuit board (PCB) has been conventionally explained with the 'current driven' scheme, in which the common-mode current is driven by the g-round voltage across the unintentional inductance of the ground plane. We have developed an alternative method for estimating common-mode excitation that is driven by the difference of the common-mode voltages for two connected transmission lines. A parameter called current division factor (CDF) that represents the degree of imbalance of a transmission line explains the common-mode voltage. In this paper, we calculate the CDF with two-dimensional (2-D) static electric field analysis by using the boundary element method (BEM) for asymmetric transmission lines with an arbitrary cross-section. The proposed 2-D method requires less time than three-dimensional simulations. The EMI increase due to a signal line being close to the edge of the ground pattern was evaluated through CDF calculation. The estimated increase agreed well-within 2 dB-with the measured one.
Scientific journal, English

An immunity/susceptibility test method using electromagnetic wave of rotating polarization
K Murano; FC Xiao; Y Kami
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 53, 4, 1184-1191, Aug. 2004, Peer-reviwed, An immunity/susceptibility test method using electromagnetic waves of rotating polarization is described and test results are discussed. Low-rate rotation of the field polarization is controlled electrically and continuously in a two-dimensional plane, so that radiated immunity/susceptibility characteristics that are three-dimensionally depicted can be obtained by using a turntable together with this method. This paper explains how the rotating fields are generated, and discusses experimentally measured characteristics of several test examples. The results show the effectiveness of the proposed method for quickly visualizing the weak/strong immunity/susceptibility directions, demonstrating its usefulness for application in the trial phase of a product development.
Scientific journal, English

Radiation from elbow-shaped transmission line
T. Yamada; K. Murano; F. Xiao; Y. Kami; J. L. Drewniak
Proc. International Symposium on Electromagnetic Compatibility, 205-208, Jun. 2004
International conference proceedings, English

Four-septum TEM cell for immunity/susceptibility test rotating EM fields
Y. Suganuma; F. Xiao; K. Murano; M. Tayarani; Y. Kami
Proc. International Symposium on Electromagnetic Compatibility, 121-124, Jun. 2004, Peer-reviwed
International conference proceedings, English

Electromagnetic emission from edge placed differential traces on printed circuit board
F. Xiao; K. Murano; M. Tayarani; Y. Kami
Proc. International Symposium on Electromagnetic Compatibility, 29-32, Jun. 2004, Peer-reviwed
International conference proceedings, English

3D-susceptibility evaluation of actual housings of electronic equipment using rotating EM fields
K Murano; M Tayarani; FC Xiao; Y Kami
2004 INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, SYMPOSIUM RECORD 1-3, IEEE, 89-92, 2004, Peer-reviwed, The evaluation method of electromagnetic-shielding capability and three-dimensional susceptibility map for an actual housing of electronic equipment are studied. Although the shielding capability of an enclosure is conventionally evaluated using shielding effectiveness (SE), it is feared that the immunity/susceptibility-weak points of the enclosure are overlooked. In this paper, the susceptibility of an actual personal computer housing as an equipment under test (EUT) is measured using rotating electromagnetic field. Experimental results show that the evaluation using susceptibility is more effective than the conventional SE. In addition, the test method is more effective to specify the immunity/susceptibility-weak points of EUT visually and easily. Furthermore, it is shown that the condition of the incident EM field and the arrangement position of an EM-field sensor seriously affect the susceptibility of the actual housing.
International conference proceedings, English

Susceptibility characterization of a cavity with an aperture by using slowly rotating EM fields, FDTD analysis and measurements
K. Murano; T. Sanpei; F. Xiao; C. Wang; Y. Kami; J.L. Drewniak
IEEE Trans. Electromagnetic Compatibility, EMC-46, 2, 907-911, 2004
Scientific journal, English

Common-mode Inductance and radiation of edge placed differential traces on printed circuited boards
F. Xiao; K. Murano; M. Tayarani; Y. Kami
Proc. of the Third Asia-Pacific Conference on Environmental Electromagnetics, 99-102, Nov. 2003, Peer-reviwed
International conference proceedings, English

Radiated immunity/susceptibility characteristics of actual chassis by using an EM wave of rotating polarization
K. Murano; M. Tayarani; F. Xiao; Y. Kami
Proc. of the Third Asia-Pacific Conference on Environmental Electromagnetics, 323-326, Nov. 2003, Peer-reviwed
International conference proceedings, English

Estimation of near-E field and far-field radiation pattern with only near-H field measurement by using the Yee scheme
H. Hirayama; Y. Kami
Proc. 2003 IEEE International Symposium on EMC, ?, May 2003, Peer-reviwed
International conference proceedings, English

A new radiated immunity test method using rotating AM-EM fields and its application
K. Murano; Y. Kami
Proc. 2003 IEEE International Symposium on EMC, ?, May 2003, Peer-reviwed
International conference proceedings, English

An Imaging system for electro-magnetic noise source identification
H Hirayama; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E86B, 4, 1377-1382, Apr. 2003, In this paper, we propose a passive imaging system for noise-source identification using time-domain waveform sampling. The fundamental concepts are based on optics theory. A waveform of a diffracted field over an entrance pupil is obtained by a digitizing oscilloscope. The phase distributions over the entrance pupil for each frequency are calculated by using Fourier transform of the acquired waveforms. Thus, an image on the focal plane is reconstructed by using inverse Fresnel transform. The most significant advantage of the proposed method is that an image for each frequency can be obtained separately. We confirmed that the proposed method can be used for practical noise-source identification, by experimentally obtaining images for an emission from personal computers.
Scientific journal, English

無給電素子を装荷することによる開口面間隙の電気的補償法の検討
菅原章; 高野忠; 花山英治; 上芳夫
電子情報通信学会論文誌B, J86-B, 3, 519-526, Mar. 2003, Peer-reviwed
Scientific journal, Japanese

A new four-septum TEM cell with multi-polarizations for use in immunity testing
F. Xiao; K. Murano; Y. Kami
Proceeding of 2003 Zurich Electromagnetic Compatibility, 219-222, Feb. 2003, Peer-reviwed
International conference proceedings, English

Near-field Measurement using Yee Scheme for Precision Evaluation and Poynting Vector Acquisition
H. Hirayama; Y. Kami
2003 International Symposium on Electromagnetic Compatibility, 661-666, Feb. 2003, Peer-reviwed
International conference proceedings, English

An immunity test method using electromagnetic wave of rotating polarization
K Murano; Y Kami
IMTC/O3: PROCEEDINGS OF THE 20TH IEEE INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE, VOLS 1 AND 2, IEEE, 1245-1250, 2003, Peer-reviwed, An immunity/susceptibility test method using electromagnetic waves of rotating polarization is presented. Low-rate rotation of the field polarization is controlled electrically and continuously in a two-dimensional plane, so that radiated immunity/susceptibility characteristics depicted three-dimensionally can be obtained by using a turntable together with the method. This paper describes how to generate the rotating fields, and some experimentally measured characteristics of some examples. The results show the effectiveness of the proposed method to reveal the weak/strong immunity/susceptibility directions at a glance, so that it would be advantageous for trial phase,of manufactured products.
International conference proceedings, English

AM回転電磁界型3次元RF放射イミュニティ試験方式
村野公俊; 上芳夫
電子情報通信学会論文誌B, J86-B, 1199-1206, 2003
Scientific journal, Japanese

An imaging system for electromagnetic noise source identification
H. Hirayama; Y. Kami
Symposium Record of International Symposium on Electromagnetic Compatibility, 2, 609-613, Sep. 2002, Peer-reviwed
International conference proceedings, English

Evaluation of 3D radiated immunity characteristics of cavities with apertures
K. Murano; K. Sanpei; F. Siao; Y. Kami
Symposium Record of International Symposium on Electromagnetic Compatibility, 907-911, Sep. 2002, Peer-reviwed
International conference proceedings, English

Transient near fields coupling to a finite length transmission line
W. Liu; F. Xiao; Y. Kami
Symposium Record of International Symposium on Electromagnetic Compatibility at Sorrento, 1225-1229, Sep. 2002
International conference proceedings, English

Noise coupling from non-parallel PCB trace routing
S. Luan; F. Xiao; W. Liu; J. Fan; Y. Kami; J. L. Drewniak; R. E. DuBroff
Symposium Record of 2002 IEEE International Symposium on Electromagnetic Compatibility, 109-112, Aug. 2002, Peer-reviwed
International conference proceedings, English

Numerical investigation of the field distribution inside a four-septum TEM cell
F. Xiao; Y. Kami
Symposium Record of International Symposium on Electromagnetic Compatibility, 707-712, Jun. 2002, Peer-reviwed
International conference proceedings, English

A Radiated RF Immunity Test Method Using Rotating Amplitude-Modulated EM Fields
K. Murano; T. Sanpei; Y. Kami
Record of 2002 International Conference on Electromagnetic Compatibility at Thailand, 137-141, Jun. 2002
International conference proceedings, English

Extracting CAD models for quantifying noise coupling between vias in PCB layouts
S. Luan; J. Fan; W. Liu; F. Xiao; J. L. Knighten; N. W. Smith; R. Alexander; J. Nadolny; Y. Kami; J. L. Drewniak
The 52nd Electronic Components and Technology Conference, May 2002
International conference proceedings, English

A new immunity test method
K Murano; Y Kami
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 44, 1, 119-124, Feb. 2002, Peer-reviwed, A new measurement system and a mapping technique for immunity or susceptibility testing are discussed. The most unique point of the system is that the electromagnetic (EM) fields are of slowly rotating polarization controlled electronically. In this paper, methods for generating slowly rotating fields are discussed. The direction of field polarization can be varied continuously and in a short time. By combining the method with a turntable, for example, the immunity- or susceptibility-characteristic maps can be obtained easily. This visualization technique is useful to detect the immunity or susceptibility attributes at a glance and thus may make the development of products with high immunity easy.
Scientific journal, English

Crosstalk effects from a cascaded line with different heights to a transmission line
WK Liu; Y Kami
2002 3RD INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, IEEE, 91-94, 2002, Crosstalk or coupling characteristics between a cascaded line with an abrupt step on the way and a straight transmission line of finite length are discussed comparing measured and calculated results. To analyze the coupling phenomenon, a modified telegrapher's equation including the effects of external fields to the lines system is derived. The fields can be obtained by estimating vector potenials of currents in the line and the termianl. sections, where the terminals are fabricated like a configuration as "via". A four-port network expression on voltages and currents at each terminal is obtained from solutions of the equation. We have done some experiments to appraise the utility of the theory used here by comparing transmission characteristics.
International conference proceedings, English

An imaging system for EM emitting sources with time-domain sampling
H Hirayama; Y Kami
2002 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, VOLS 1 AND 2, SYMPOSIUM RECORD, IEEE, 61-64, 2002, Peer-reviwed, In this paper, we propose a passive imaging system for noise source identification of digital circuit using time-domain waveform sampling. The fundamental concepts are based on optics theory. A waveform of a diffracted field on an entrance pupil is acquired by a digital oscilloscope. The phase distributions on the entrance pupil for each frequency are calculated by using Fourier transformation of the acquired waveform. Thus, an image on the focal plane is reconstructed by using Fresnel transform.
The most significant advantage of the proposed method is that an image for each frequency can be obtained separately. To confirm whether the proposed method can be used for practical noise source identification, an experiment has been performed to obtain an image for an emission from personal computers. Experimental results show this fact clearly.
International conference proceedings, English

The use of via holes for controlling the crosstalk of non-parallel microstrip lines on PCBs
F Xiao; K Murano; Y Kami
2002 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, VOLS 1 AND 2, SYMPOSIUM RECORD, IEEE, 633-638, 2002, Peer-reviwed, In this work, the metal filled via holes are constructed into fences between the non-parallel microstrip lines to control the crosstalk. In practice, coupling between non-parallel traces is common. On the other hand, via holes are easy and inexpensive to build using the current fabrication process for the commonly used PCBs. The effects of the via holes for alleviating the coupling are investigated experimentally and numerically. The crosstalk is controlled by adjusting the position of the via holes, the structure of via fence, and the length of the via fence. Some design guidelines for the proper placement of the via holes are concluded. Experiments are conducted and the calculated results are compared with the measured data.
International conference proceedings, English

An imaging system for EM emitting sources using a six-port interferometer
H Hirayama; T Yakabe; Y Kami
IEICE TRANSACTIONS ON ELECTRONICS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E84C, 12, 1885-1891, Dec. 2001, Peer-reviwed, A Fourier-optics based imaging system for electromagnetic interference (EMI) sources is presented. It is necessary to decrease undesired emissions in order to meet EMI requirements. To investigate this problem, a visualization of electromagnetic (EM) emitting fields is very useful. In this paper. we propose a passive imaging system of EM emitting fields based on Fourier optics. Amplitude and phase values of diffracted fields on an entrance pupil are acquired by using a six-port interferometer. The measured EM fields are then processed on a computer, and an image is retrieved using an inverse Fresnel transform. Experiments are presented, which demonstrate the potential of the proposed method. The proposed system is useful not only in the field of electromagnetic compatibility (EMC) but also for scientific elucidation to discuss the optics and microwave theory of the same viewpoint.
Scientific journal, English

Analysis of crosstalk between finite-length microstrip lines: FDTD approach and circuit-concept modeling
Fengchao Xiao; Weikun Liu; Yoshio Kami
IEEE Transactions on Electromagnetic Compatibility, 43, 4, 573-578, Nov. 2001, Peer-reviwed, Two approaches, one based on the circuit concept and the other based on the field theory, are used to model the crosstalk between two microstrip lines of finite length and arbitrary orientation. In the circuit-concept modeling, a set of equations for the line voltages and currents has been derived from a modified telegrapher's equation. A four-port network expression is resultantly obtained by solving the equations, thus the crosstalk can be predicted by applying terminal conditions to the network expression. On the other band, the extended finite-difference time-domain (FDTD) method has been used to model the terminal resistors and the feeding resistive voltage source in the crosstalk analysis. Several physical models have been fabricated and experiments were performed. The calculated results are compared to measurements. In our experiment, for microstrip lines of finite length and arbitrary orientation, there are short line-sections or vias at each of the four ports, which should be incorporated into the crosstalk analysis. This effect has been investigated numerically and experimentally.
Scientific journal, English

An immunity mapping method by using EM field with a slowly rotating polarization
Takeshi Sanpei; Kimitoshi Murano; Koji Nakada; Yoshio Kami
Korea-Japan AP/EMC/EMT Joint Conference Proceedings, 192-195, Sep. 2001, Peer-reviwed
International conference proceedings, English

Susceptibility and immunity characteristics of circuits on a PCB
Yoshio Kami
2001 Asia-Pacific Radio Science Conference Record, E8-3, Aug. 2001
International conference proceedings, English

Trnasient response of nonuniform and uniform transmission lines excited by external field
Fengchao Xiao; Yoshio Kami
2001 IEEE EMC Intn. Symp. Record, 210-215, Aug. 2001
International conference proceedings, English

Design of a log-periodic dipole array for pulsed electromagnetic compatibility testing using a genetic algorithm
Fengchao Xiao; Yoshio Kami
Progress In Electromagnetics Research Symp. Proceedings, 378, Jul. 2001
International conference proceedings, English

A novel approach analysis and modeling of electromagnetic problems using fuzzy inference system
Majid Tayarani; Yoshio Kami
Progress In Electromagnetics Research Symp. Proceedings, 395, Jul. 2001
International conference proceedings, English

A study of three-dimensional RF radiated immunity test method using EM field of low speed rotation
Kimitoshi Murano; Yoshio Kami
Progress In Electromagnetics Research Symp. Proceedings, 594, Jul. 2001
International conference proceedings, English

A new approach to analysis and modeling of externally excited transmission lines using fuzzy inference
Majid Tayarani; Yoshio Kami
Trans. IEE of Japan, 電気学会, 121-A, 6, 547-553, Jun. 2001, Peer-reviwed
Scientific journal, English

Qualitative analysis in engineering electromagnetics: An application to general transmission lines
M Tayarani; Y Kami
IEICE TRANSACTIONS ON ELECTRONICS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E84C, 3, 364-375, Mar. 2001, Peer-reviwed, Fuzzy inference abilities were implemented to electromagnetic problems for the first time by the authors. After very successful results of applying the developed fuzzy modeling method to input impedance of a general monopole antenna, in this paper classifying the engineering electromagnetic problems simply, we apply the abilities of the proposed fuzzy inference method to make a qualitative model for transmission fines as a general example for a certain category of problems. The proposed approach starts from observing the problem through the window of human direct understandings and uses some parameters las calculation base) evaluated basic for modeling process. It is shown that because of using this novel view point, a very simple fuzzy system based on new parameters may model the behavior of a transmission line in general form. The knowledge of each variable can be extracted and saved as simple curves individually through continuing to make several models considering the desired variable as parameter. Finally, it is shown that the proposed method works even in highly nonuniform transmission line cases without changing in structure and complexity.
Scientific journal, English

A qualitative analysis approach for externally excited transmission lines
Majid Tayarani; Yoshio Kami
Int. Zurich Symp. and Tech. Exhibition on EMC, Zurich, Switzerland, 589-594, Feb. 2001
International conference proceedings, English

An imaging system for EM emitting sources using a 6-port correlator
H Hirayama; T Yakabe; Y Kami
2001 IEEE EMC INTERNATIONAL SYMPOSIUM, VOLS 1 AND 2, IEEE, 374-377, 2001, Fourier optics based imaging system for EMI sources is discussed. Recently, it is required to decrease undesired emission in order to prevent from EMI. To investigate this problem, a visualization of EM emitting fields ig very useful. In this paper, we propose a passive imaging system of EM emitting fields based on Fourier-optics. The complex amplitude values of diffracted fields on an entrance pupil are acquired by using a 6-port correlator which acts as an interferometer. Measured EM fields are then processed by a computer and an image is retrieved using Fresnel inverse transform.
International conference proceedings, English

A study of three-dimensional immunity characteristics of an EUT using low-speed rotation fields
K Murano; Y Kami
2001 IEEE EMC INTERNATIONAL SYMPOSIUM, VOLS 1 AND 2, IEEE, 527-530, 2001, Three-dimensional radiated immunity characteristics of an equipment is discussed. Here, the incident fields to an equipment under test (EUT) are rotated at a very low speed on a plane. By applying the fields of low-speed rotation (rotating fields) to the EUT, the directional immunity characteristic in a plane can be obtained automatically. Moreover, by setting the EUT on a turntable, the three-dimensional (3D) immunity map can also be achieved. In this paper, to show the capabilities of the developed method, the immunity test of a rectangular cavity with a slit is attempted by a trial setup as an example. Experimental results show that the radiated immunity characteristics of EUT are obtained in detail.
International conference proceedings, English

Electromagnetic fields and transmission characteristics of a filter composed of transmission lines
WK Liu; S Nishikado; Y Kami
2001 IEEE EMC INTERNATIONAL SYMPOSIUM, VOLS 1 AND 2, IEEE, 1111-1116, 2001, When two transmission lines(TLs) such as microstrip lines are set in the neighborhood, coupling or crosstalk fileds may be generated between them. To investigate fields caused by passive circuits, coupled printed-circuit traces are focused. The fields can be obtained by estimating vector potentials of currents in the line and the terminal sections, where the terminal are fabricated like a configuration as "via". The filter performace characteristics and the fields at frequencies of pass and stop bands of the filters are mearsured and calculated; the results show that the currents at the line terminals affect seriously, and the fields exist even at frequencies of the stop band.
International conference proceedings, English

回転電磁界を用いたRF放射イミュニティ試験法とその基本特性
村野公俊; 上 芳夫
電気学会論文誌A, 120-A, 11, 1044-1050, Nov. 2000, Peer-reviwed
Scientific journal, Japanese

Toward qualitative study of transmission lines using fuzzy inference
Majid Tayarani; Yoshio Kami
4th European Symp. on Electromagnetic Compat., Brugge, Belgium, 233-238, Sep. 2000, Peer-reviwed
International conference proceedings, English

Fuzzy modeling of nonuniform transmission lines
Majid Tayarani; Yoshio Kami
IEEE Intn. Symp. on Antennas and Propagation, Fukuoka, Japan, 737-740, Aug. 2000, Peer-reviwed
International conference proceedings, English

Low frequency radiated immunity test using three-dimensional Helmholtz-coil set
K Murano; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E83B, 3, 467-473, Mar. 2000, Peer-reviwed, A radiated immunity test method using fields in a three-dimensional Helmholtz-coil set is described. The incident field to equipment under test (EUT) is generated by art orthogonally structured three sets of Helmholtz coil. Using this structure, the resultant field can be generated with arbitrary amplitude and direction. Therefore, the three dimensional immunity characteristics of an EUT can be cleared. Thf resultant field is calculated numerically and ii. is established that the field distribution is uniform inside the three dimensional Helmholtz-coil set. This is also confirmed through comparison with measured results. As an example, the immunity test of a cathode ray tube (CRT) display is made and the immunity map of CRT is obtained without resecting placement of EUT. Such map makes us understand the physical meaning and weak points.
Scientific journal, English

Controlling power distribution plane resonance in multilayer printed circuit boards
T. Harada; H. Sasaki; Y. Kami
IEICE Trans. Commun., E-83, 3, 577-585, Mar. 2000
English

ミキサを用いた広帯域任意位相差分波器
村野公俊; Majid Tayarani; 上 芳夫
電子情報通信学会論文誌B, J38-B, 1, 131-133, Jan. 2000, Peer-reviwed
Scientific journal, Japanese

Fuzzy Interence in Engineering Electromagnetics : An Application to Conveutional and Angled Monopole-Antenenna
Majid Tayarani; Yoshio Kami
IEICE Trams. Electronics, E83-C, 1, 85-97, Jan. 2000, Peer-reviwed
Scientific journal, English

放射イミュニティ試験用3次元直交ヘルムホルツコイルの基本特性
村野公俊; 上 芳夫
電気学会論文誌A, 119-A, 12, 1409-1415, Dec. 1999, Peer-reviwed
Scientific journal, Japanese

Discontinuity effects for a cascaded transmission-line system consisting of two line sections of different height
Weikun Liu; Yoshio Kami
Proc. of 1999 IEEE Intn. Symp. Electromag. Compat., 526-530, Aug. 1999, Peer-reviwed
International conference proceedings, English

Investigation on power distribution plane resonance in multilayer printed circuit boards using a transmission-line model
T. Harada; H. Sasaki; Y. Kami
Proc. of 1999 Intn. Symp. Electromag. Compat., 21-24, May 1999
International conference proceedings, English

Three directional Helmholtz coils for a low frequency-magnetic-field immunity test
K. Murano; A.Shiokawa; Y. Kami
Proc.of 1999 Intn. Symp. Electromag. Compat., 79-81, May 1999
International conference proceedings, English

A new modeling approach in engineering electromagnetics using fuzzy inference
M. Tayarani; Y. Kami
Proc. of 1999 Intn. Symp. Electromag. Compat., 106-109, May 1999
International conference proceedings, English

Vertical riser effects of a finite-length transmission line
W.Liu; Y.Kami
Proc. of 1999 Intn. Symp. Electromag. Compat., 642-645, May 1999
International conference proceedings, English

A generation method of electromagnetic fields rotating at a low speed for the immunity test
K Murano; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E82B, 3, 567-569, Mar. 1999, Peer-reviwed, A novel method for the radiated immunity test is proposed. The method is to generate controlled electromagnetic fields applying in arbitrary directions to an under test. The fields rotate at a low speed controlled electrically so that the immunity characteristics may be known in more detail. The primal characteristics of the fields generated by a trial benchtop setup are investigated.
Scientific journal, English

Time domain coupling between non-parallel transmission lines
W Liu; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E80B, 11, 1639-1644, Nov. 1997, Peer-reviwed, Coupling in time domain between two nonparallel transmission lines of finite length is analyzed by using a circuit concept. Coupling equations based on the Maxwell's equations for lossless transmission lines in a homogeneous medium are written by a set of non-homogeneous differential equations including distributed source terms produced by external electromagnetic fields. The forcing terms are expressed by vector potentials generated by currents in the line section and at the transitions. A set of solutions in frequency domain is obtained by a four-port network expression with regard to the terminal voltages and currents, and can be applied to estimation of the frequency-domain crosstalk. Utilizing the inverse Fast Fourier transform (FFT), the crosstalk responses between the lines is studied in lime domain. Comparison of theoretical and experimental results shows the validity of the method.
Scientific journal, English

Investigation on radiated emission characteristics of multilayer printed circuit boards
T Harada; H Sasaki; Y Kami
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E80B, 11, 1645-1651, Nov. 1997, Peer-reviwed, This paper analyzes mechanisms of radiated emissions from multilayer printed circuit boards (PCBs) and presents a model to describe the characteristics of such radiation. The radiation mechanism from a four-layer PCB, including the internal power and ground planes, is investigated using a time-domain magnetic field measurement near the PCB. Measurement of the waveform indicates that the main source of radiation is in the power distribution planes. To investigate the characteristics of the radiation from the power distribution, the S(21)s of the board are measured; the board impedance and the transmission characteristics of the power distribution planes are found to be directly related to the Sql between the two points in the board. The results indicate that the power distribution acts as a transmission line al frequencies higher than 100 MHz. A model that can explain well the radiation properties of these planes treats them as a parallel-plate transmission line interconnected by decoupling circuit comprising a decoupling capacitor and interconnect inductance. From the transmission line theory it is deduced that the line resonance gives rise to strong radiated emissions. The interconnect inductance is an important factor in determining radiation characteristics.
Scientific journal, English

Field coupling to nonuniform and uniform transmission lines
M Omid; Y Kami; M Hayakawa
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 39, 3, 201-211, Aug. 1997, Peer-reviwed, In this paper, we study time-domain and frequency-domain responses of nonuniform and uniform transmission lines excited by incident electromagnetic waves, Externally excited uniform transmission lines permit closed-form solutions in terms of inverse chain matrix, whereas nonuniform lines cannot be analytically solved, in general, Here, we adopt a method of equivalent cascaded network chain as the method of solving the latter situation, Useful and compact expressions for the load currents induced at terminal loads are derived, To confirm the validity of this method and the forcing terms, theoretical and experimental results of coupling calculations for a few typical (uniform/nonuniform) line geometries, relevant in the EMC field, are presented and discussed.
Scientific journal, English

Crosstalk analysis of high-speed logic circuits
M Omid; Y Kami; M Hayakawa
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E80B, 5, 678-685, May 1997, Peer-reviwed, This paper presents a theory based on combined differential- and common-mode propagation for crosstalk and transient analysis of pairs of asymmetric coupled interconnects with arbitrary time-invariant linear termination circuits. Time-domain solutions are obtained by an exact numerical inversion of Laplace transform (NILT). Two example circuits (coupled coplanar stripline and microstrip structures) are studied to examine the accuracy and efficiency of the present method.
Scientific journal, English

Analysis of Field Coupling to Nonuniform Transmission Lines
Mahmoud Omid; Yoshio Kami; Masashi Hayakawa
Transaction IEE of Japan, 117-A, 5, 484-489, 1997, Peer-reviwed
Scientific journal, English

隣接する有限長マイクロストリップ線路間のクロストーク解析
劉維坤; 上芳夫
電気学会論文誌A, 117-A, 5, 502-508, 1997
Scientific journal, Japanese

有限なプリント回路基板の近傍磁界測定と簡便な放射界計算法
戸花照雄; 上芳夫
電子情報通信学会論文誌, J79-B-II, 11, 812-818, Nov. 1996, Peer-reviwed
Scientific journal, Japanese

回路論的手法による非平行な伝送線路間のクロストーク解析
劉 維坤; 上 芳夫
電子情報通信学会論文誌, J79-B-II, 11, 819-826, Nov. 1996, Peer-reviwed
Scientific journal, Japanese

Coupling of a transient near field to a transmission line
Y Kami; M Kimura
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E79B, 4, 497-502, Apr. 1996, Peer-reviwed, The coupling response of an external transient electromagnetic field to a transmission line is considered. An experiment has been conducted to verify the line equations for a transmission line excited externally by a transient near field. The model field is generated by a monopole antenna installed in the vicinity of the transmission line and driven by a step waveform. The waveform is analyzed into discrete spectrum components using a Fourier transform. The frequency-domain field components affecting the transmission line are estimated by the moment method, and then the induced frequency-domain voltage at the terminal load is converted into a time-domain voltage using an inverse Fourier transform. Comparison between the measured and the computed values provides verification of the line equations. The coupling mechanism is discussed from the experimental results. It seems equivalently that the transmission line picks up the field, generated at the feed point and the top point of the monopole antenna, at both terminal ends.
Scientific journal, English

平行なプリント配線間の遠端クロストーク
上芳夫
電子情報通信学会論文誌, J76-B-II, 6, 546-547, Jun. 1993, Peer-reviwed
Scientific journal, Japanese

Mechanism of electromagnetic Radiation from a Transmission Line
Yoshio Kami
IEICE Trans. Commun., E75-B, 3, 115-123, Mar. 1992, Peer-reviwed
Scientific journal, English

TRANSIENT-RESPONSE OF A TRANSMISSION-LINE EXCITED BY AN ELECTROMAGNETIC PULSE
Y KAMI; R SATO
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 30, 4, 457-462, Nov. 1988, Peer-reviwed
Scientific journal, English

Analysis of Radiation Characteristics of a Finite-length Transmission Line by a Circuit-Concept Approach
Yoshio Kami; Risaburo Sato
IEEE Transaction on Electromagnetic Compatibility, EMC-30, 2, 114-121, May 1988, Peer-reviwed
Scientific journal, English

任意変化の電磁波による伝送線路の過渡応答
上 芳夫; 佐藤利三郎
電子通信学会論文誌B, J70-B, 9, 1035-1040, Sep. 1987, Peer-reviwed
Scientific journal, Japanese

有限長伝送線路からの放射現象
上 芳夫; 佐藤利三郎
電子通信学会論文誌B, J69-B, 12, 1820-1826, Dec. 1986, Peer-reviwed
Scientific journal, Japanese

COUPLING MODEL OF CROSSING TRANSMISSION-LINES
Y KAMI; R SATO
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 28, 4, 204-210, Nov. 1986, Peer-reviwed
Scientific journal, English

CIRCUIT-CONCEPT APPROACH TO EXTERNALLY EXCITED TRANSMISSION-LINES
Y KAMI; R SATO
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 27, 4, 177-183, 1985, Peer-reviwed
Scientific journal, English

電磁波と伝送線路との結合
上 芳夫; 佐藤利三郎
電子通信学会論文誌B, J67-B, 2, 209-215, Feb. 1984, Peer-reviwed
Scientific journal, Japanese

外部電磁波にさらされた伝送線路の等価回路
上 芳夫; 佐藤利三郎
電子通信学会論文誌B, J66-B, 5, 687-688, Mar. 1983, Peer-reviwed
Scientific journal, Japanese

不連続な伝送線路による整合回路と終端抵抗器設計への応用
上 芳夫; 田中正智; 荒川輝明
電子通信学会論文誌B, J62-B, 9, 849-850, Sep. 1979, Peer-reviwed
Scientific journal, Japanese

等角写像による強結合遮へい形対線路の解析と方向性結合器への応用
上 芳夫; 長沢庸二; 荒川輝明; 佐藤利三郎
電子通信学会論文誌B, J63-B, 5, 476-483, May 1979, Peer-reviwed
Scientific journal, Japanese

円形内導体を有する方形線路の特性インピーダンス
上 芳夫; 岩倉 博; 荒川輝明
電子通信学会論文誌B, J58-B, 4, 166-167, Apr. 1975, Peer-reviwed
Scientific journal, Japanese

等角写像によるストリップ線路の一解析法
岩 倉博; 上 芳夫; 荒川輝明
電子通信学会論文誌B, J57-B, 9, 590-592, Sep. 1974, Peer-reviwed
Scientific journal, Japanese

円形内部導体を用いたインターディジタルバンドパスフィルタの一設計法
上 芳夫; 岩倉 博; 荒川輝明
電子通信学会論文誌B, J57-B, 5, 328-330, May 1974, Peer-reviwed
Scientific journal, Japanese

方形内部導体を用いたインターディジタルバンドパスフィルタの一設計法
岩倉 博; 上 芳夫; 荒川輝明
電子通信学会論文誌B, J56-B, 10, 450-451, Oct. 1973, Peer-reviwed
Scientific journal, Japanese

EMC設計技術･基礎編
エレクトロニクス実装学会電磁特性技術委員会編
Japanese, Joint work, エレクトロニクス実装学会, Aug. 2004

情報通信機器のノイズイミュニティ--電磁障害防止に向けて--
電気学会情報; 通信機器のノイズイミュニティ計測技術調査専門委員会
Japanese, Joint work, コロナ社, Jul. 2002

Review of Radio Science 1999-2002
W. Ross Ston; Editor
English, Joint work, IEEE Press, 2002

電子工学初歩シリーズ 電気回路 3・4
鎌倉友男; 上 芳夫; 渡辺好章
Japanese, Joint work, 培風館, 1998

電磁環境ハンドブック
仁田周一; 上芳夫; 藤原修; 佐藤由郎; 瀬戸信二
Japanese, Editor, 朝倉書店, 1996

電磁波雑音のタイムドメイン計測技術
Japanese, Joint work, コロナ社, 1995

応用電磁波工学
山下栄吉
Japanese, Joint work, 近代科学社, 1992

４セプタムTEMセルを用いたマイクロストリップ線路の感受性特性
川原弘子; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会
Dec. 2006

負荷回路を有する二本線路のLCL特性
小栗康範; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会
Nov. 2006

２本の平行な非対称マイクロストリップ線路の伝送特性
永久保仁志; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会
Jul. 2006

位相差分波器を用いない４セプテムTEMセルの励振法
川原弘子; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,2006年電子情報通信学会総合大会
Mar. 2006

隣接する線路間のクロストーク
橋本良太; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,2006年電子情報通信学会総合大会
Mar. 2006

Stitching Capacitorを用いたグラウンドに入ったスリットによる線路間クロストークの低減効果
肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,2006年電子情報通信学会総合大会
Mar. 2006

４セプテムTEMセルによる回転電磁界発生システム
川原弘子; マジドタヤラニ; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会
Jan. 2006

ディファレンシャルモード励振の回路パターン線路における非平衡とコモンモード電流
上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Oct. 2005

高速電力線搬送通信における屋内電源コンセントの等価表現とコモンモード電流
上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Sep. 2005

Experimental analysis of transmission characteristics of bent line
S-W. Park; D-C. Park; Y. Kami
Oral presentation, English, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

グラウンドに入ったスロットによる線路間結合について(II)
中田洋平; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

PCB多線条線路でのモード分解法について(I)
牧野修; 當山俊一郎; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

PCB多線条線路でのモード分解法について(II)
當山俊一郎; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

多層基板における伝送線路間のクロストーク
橋本良太; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

画像復元手法による磁界ループプローブの誤差補正
今村雄介; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

４セプテムTEMセル内のターンテーブルによる電磁界への影響
川原弘子; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2005

多線条線路におけるクロストーク解析
當山俊一郎; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Jul. 2005

多層基板における伝送線路間のクロストーク
橋本良太; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Jun. 2005

近傍磁界測定用矩形ループプローブ誤差について
今村雄介; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会総合大会
Mar. 2005

不均質媒質からなる伝送線路の長尺効果について
牧野修; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会総合大会
Mar. 2005

グラウンド面に隙間を有する折れ曲がり伝送線路のEMC特性
山田卓司; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会総合大会
Feb. 2005

近傍磁界測定用ループプローブの誤差について
今村雄介; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Dec. 2004

グラウンド面に広い欠損を有するマイクロストリップラインの伝送特性
當山俊一郎; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Oct. 2004

高さ方向に折れ曲がった伝送線路からの放射
山田卓司; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Oct. 2004

４セプテムTEMセル内における電磁界分布
菅沼嘉光; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2004

シールドなし４セプテムTEMセル内の電磁界分布
肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2004

曲がりのあるマイクロストリップ線路上のポインティングベクトル分布推定
今村雄介; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会通信ソサイエティ大会 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2004

影像法による折れ曲がり伝送線路からの放射の解析
山田卓司; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2004

グラウンドに入ったスロットによる線路間結合について
中田洋平; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2004

グラウンド面に欠損を有するマイクロストリップラインの放射損失特性
當山俊一郎; 村野公俊; 肖鳳超; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会通信ソサイエティ大会
Sep. 2004

近傍磁界測定による電界及びポインティングベクトル分布の推定
今村雄介; 肖鳳超; 村野公俊; 上芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Jul. 2004

Radiated immunity/susceptibility test method using slowly rotating electromagnetic wave
Y. Kami; F. Xiao; K. Murano; M. Tayarani
Invited oral presentation, English, 2004 International Symposium on Electromagnetic Compatibility, IEICE Communication Society/EMC Group, Sendai, Japan, International conference
Jun. 2004

グラウンド面に隙間を有する折れ曲がり伝送線路からの放射
山田 卓司; 村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会2004年総合大会
Mar. 2004

マイクロストリップラインと同軸ケーブルとの接合部のEMC基本特性
當山 俊一郎; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,2004年総合大会
Mar. 2004

電磁界シミュレータの４セプテムTEMセルへの応用
肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会2004年総合大会
Mar. 2004

グラウンド板に入ったスリットの伝送線路によるモデルとその限界
平山 裕; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Dec. 2003

立体的屈曲を持つ伝送線路の基本特性
山田 卓司; 村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会2003年ソサイエティ大会
Sep. 2003

４セプテムTEMセル内における回転電磁界の基本特性
菅沼 嘉光; 村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会2003年ソサイエティ大会
Sep. 2003

電子機器筐体内に配置された伝送線路の3次元感受性評価
村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会
Sep. 2003

デフューザ挿入時におけるリバブレーションチャンバの基本特性
清岡 光児; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会2003年ソサイエティ大会
Sep. 2003

基板間接続におけるグラウンドに入ったスリットの影響
平山 裕; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Sep. 2003

４セプテムセルの伝送特性について
菅沼 嘉光; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会,電子情報通信学会環境電磁工学研究会
Jun. 2003

４セプテムTEMセルの回路網方程式と伝送特性
肖 鳳超; 上 芳夫
Oral presentation, Japanese, 2003年電子情報学会総合大会
Mar. 2003

偏波角の変動を考慮した反射箱の電界均一性評価
西島 史夫; 上 芳夫
Oral presentation, Japanese, 2003年電子情報学会総合大会
Mar. 2003

有限伝送線路の立ち上がり部の等価表現について
廣瀬 孝睦; 村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 2003年電子情報学会総合大会
Mar. 2003

ファジィモデリングを用いた円状の欠落のある電源/グラウンド層基板の共振周波数推定
藤本 真志; Tayarani. Majid; 上 芳夫
Oral presentation, Japanese, 2003年電子情報学会総合大会
Mar. 2003

有限長伝送線路の立ち上がり部分の影響について
端山 幸治; 劉 維坤; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会 2002年ソサイエティ大会
Sep. 2002

金属筐体内に配置した伝送線路(2)
廣瀬 孝睦; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会2002年ソサイエティ大会
Sep. 2002

能動回路を含むマイクロストリップ線路系のTEMセル内での感受性モデル
丸山 雅人; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会 2002年ソサイエティ大会
Sep. 2002

開口を有するシールドケース内に配置した伝送線路の感受性評価
三瓶 毅; 村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会 2002年ソサイエティ大会
Sep. 2002

遺伝的アルゴリズムによるファジイ推論を用いた手法
藤本 真志; Tayarani M; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会 2002年ソサイエティ大会
Sep. 2002

回転電磁界励振による反射箱の時間領域評価
西島 史夫; 村野 公俊; 上 芳夫
Oral presentation, Japanese, 電子情報通信学会 2002年ソサイエティ大会
Sep. 2002

Yee格子を用いた近傍電界／磁界分布測定のMaxwell方程式による評価
平山 裕; 上 芳夫
Oral presentation, Japanese, 2002年信学総合大会
Mar. 2002

対数増幅器を用いた電磁界強度連続測定方式
村野 公俊; 三瓶 毅; 上 芳夫
Oral presentation, Japanese, 2002年信学会総合大会
Mar. 2002

回転電磁界の反射箱への適用
西島 史夫; 村野 公俊; 上 芳夫
Oral presentation, Japanese, 2002年信学会総合大会
Mar. 2002

ファジィ推論を用いた欠落のある電源／グラウンド層基板の共振周波数推定
藤本 真志; M Tayarani; 上 芳夫
Oral presentation, Japanese, 2002年信学会総合大会
Mar. 2002

ステップ伝送線路からのクロストーク解析
劉 維坤; 端山 幸治; 上 芳夫
Oral presentation, Japanese, 2002年信学会総合大会
Mar. 2002

FDTD法を用いたスロット付き空洞共振器のイミュニティ特性解析
三瓶 毅; 村野 公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 2002年信学会総合大会
Mar. 2002

TEMセル内の電磁界と伝送線路との結合
丸山 雅人; 村野 公俊; 上 芳夫
Oral presentation, Japanese, 2002年信学会総合大会
Mar. 2002

有限長伝送線路の立ち上がり部分の影響について（２）
端山幸治; 劉維坤; 上芳夫
Others, Japanese, 電子情報通信学会技術報告書
Mar. 2002

有限長伝送線路の立ち上がり部分の影響について（２）
端山幸治; 劉維坤; 上芳夫
Others, Japanese, 電子情報通信学会技術報告書
Mar. 2002

実環境における放射源イメージング
平山 裕; 上 芳夫
Others, Japanese, 電子情報通信学会技術報告書
Jan. 2002

TEMセルを用いた能動回路の感受性評価
丸山 雅人; 村野 公俊; 上 芳夫
Others, Japanese, 電子情報通信学会 環境電磁工学研究会
2002

金属筐体内に配置した伝送線路
廣瀬 孝睦; 上 芳夫
Others, Japanese, 電子情報通信学会 環境電磁工学研究会
2002

Yee格子を用いた近傍界測定と遠方界による放射源イメージング
平山 裕; 上 芳夫
Others, Japanese, 電子情報通信学会 環境電磁工学研究会
2002

Yee格子を用いた近傍界分布のみの測定による近傍界分布/遠方界放射パターン推定
平山 裕; 上 芳夫
Others, Japanese, 電子情報通信学会 環境電磁工学研究会
2002

電子機器筐体の遮蔽効果と感受性との関係について
三瓶 毅; 村野 公俊; 肖 鳳超; 上 芳夫
Others, Japanese, 電子情報通信学会 環境電磁工学研究会
2002

交差する有限長伝送線路のクロストークについて
劉維坤; 上芳夫
Others, Japanese, 電子情報通信学会技術報告書
Dec. 2001

有限長伝送線路の立ち上がり部分の影響について
端山幸治; 劉維坤; 上芳夫
Others, Japanese, 電子情報通信学会技術報告書
Dec. 2001

EMC問題における伝送線路方程式
上芳夫
Others, Japanese, 信学会環境電磁工学研究専門委員会「第13回電気・電子機器のEMCワークショップ」
Nov. 2001

EMC問題における伝送線路方程式
上芳夫
Keynote oral presentation, Japanese, 信学会環境電磁工学研究専門委員会「第13回電気・電子機器のEMCワークショップ」, Domestic conference
Nov. 2001

ウエハレベルCSPにおける伝送特性および受動部品の内臓化技術
西角紗耶香; 青木由隆; 上芳夫
Oral presentation, Japanese, 第11回マイクロエレクトロニクスシンポジウム論文集
Oct. 2001

ダイポール素子を装荷したホーンアレーの高利得化
菅原章; 高野忠; 花山; 上芳夫
Oral presentation, Japanese, 2001年信学会通ソ大会
Sep. 2001

EMT挿入時におけるTEMセルの基本特性(2)
廣瀬孝睦; 村野公俊; 上芳夫
Oral presentation, Japanese, 2001年信学会通ソ大会
Sep. 2001

基板間ケーブル接続モデルにおけるIC動作時の電流ベクトル可視化と放射ノイズ低減
青木,平井; 大滝,上
Oral presentation, Japanese, 電子情報通信学会2001年信学会通ソ大会
Sep. 2001

振幅変調の回転電磁界型放射イミュニティ試験方式による3次元イミュニティマップの作成
村野公俊; 三瓶毅; 中田幸司; 上芳夫
Oral presentation, Japanese, 電子情報通信学会2001年信学会通ソ大会
Sep. 2001

Susceptibility and immunity characteristics of circuits on a PCB
Yoshio Kami
Invited oral presentation, English, 2001 Asia-Pacific Radio Science Conference Record, International conference
Aug. 2001

過渡電磁界と伝送線路との結合
劉維坤; 安藤; 上芳夫
Others, Japanese, 電子情報通信学会技術報告書
Jun. 2001

逆畳み込み演算による電界プロープの分解能向上
平山裕; 上芳夫
Others, Japanese, 電子情報通信学会技術報告書
Jun. 2001

ダイポール素子を有するホーンアレーの利得変化の解析
菅原 章; 高野 忠; 花山英治; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

PCB上に製作された電子回路の伝送特性と感受性（２）～チップ型フィルタの感受性特性～
丸山雅人; 村野公俊; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

交差する伝送線路間の結合解析
劉 維坤; 尚 爾哲; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

セミリジッドケーブルを用いた電界プローブの特性評価
廣瀬孝睦; 平山 裕; 村野公俊; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

信号処理的手法による電界プローブの分解能向上
平山 裕; 廣瀬孝睦; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

近傍磁界プローブの特性評価法
望月英之; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

EUT挿入時におけるTEMセルの基本特性
村野公俊; 肖 鳳超; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

EUT形状によるTEMセルの電界分布への影響
肖 鳳超; 村野公俊; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

回転電磁界を用いたRF放射イミュニティ試験法の基本特性（3）～直交対数周期アンテナを用いた場合～
三瓶 毅; 中田幸司; 村野公俊; 上 芳夫
Oral presentation, Japanese, 平成13年度電子情報通信学会総合大会
Mar. 2001

回転電磁界型RFイミュニティ測定方式を用いた感受性マップの作成
村野公俊; 上 芳夫
Others, Japanese, 電子情報通信学会技術研究報告
Nov. 2000

結合2本線路形フィルタの近傍磁界について
劉維坤; 西角紗耶香; 上 芳夫
Others, Japanese, 電子情報通信学会技術研究報告
Oct. 2000

散乱素子を装荷したホーンアレーの理論的特性の検討
菅原 章; 高野 忠; 花山英治; 上 芳夫
Oral presentation, Japanese, 平成12年度電子情報通信学会ソサイエティ大会
Sep. 2000

セプテムの厚さを考慮したTEMセル高次モード遮断周波数の計算
肖 鳳超; 村野公俊; 上 芳夫
Oral presentation, Japanese, 平成12年度電子情報通信学会ソサイエティ大会
Sep. 2000

回転電磁界を用いたRF放射イミュニティ試験法の基本特性（II）
村野公俊; 中田幸司; 上 芳夫
Oral presentation, Japanese, 平成12年度電子情報通信学会ソサイエティ大会
Sep. 2000

A fuzzy model for externally excited transmission line
Majid Tayarani; Yoshio Kami
Oral presentation, English, 電子情報通信学会平成12年度電子情報通信学会ソサイエティ大会
Sep. 2000

PCB上に製作された電子回路の伝送特性と感受性
西角紗耶香; 村野公俊; 上 芳夫
Oral presentation, Japanese, 平成12年度電子情報通信学会ソサイエティ大会，
Sep. 2000

結合2本線路形フィルタの近傍磁界について
劉維坤; 西角紗耶香; 上 芳夫
Oral presentation, Japanese, 平成12年度電子情報通信学会ソサイエティ大会
Sep. 2000

Qualitative modeling and interpretation of input impedance of general transmission lines
Majid Tayarani; Yoshio Kami
Oral presentation, English, 信学会総合大会
Mar. 2000

基板間ケーブル伝送形態における放射ノイズとコモンモードインピーダンス特性
林 靖二; 平井宏治; 大滝 徹; 上 芳夫
Oral presentation, Japanese, 信学会総合大会
Mar. 2000

多層プリント基板の層間配線と電源供給系の結合モデル
原田高志; 佐々木英樹; 栗山敏秀; 上 芳夫
Oral presentation, Japanese, 信学会総合大会
Mar. 2000

回転電磁界を用いたRF放射イミュニティ試験法の基本特性
村野公俊; 中田幸司; 上 芳夫
Oral presentation, Japanese, 信学会総合大会
Mar. 2000

短絡負荷形TEMセルを用いた感受性の測定法
村野公俊; 菅原佳菜; 上 芳夫
Oral presentation, Japanese, 信学会総合大会
Mar. 2000

電子情報通信学会

米国電気電子学会(Institute of Electric and Electronics Engineers)

電気学会

エレクトロニクス実装学会

回路実装学会