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2007 4th International Symposium on electromagnetic Compatibility(EMC’2007)

作者： Masayoshi Ohta Shuichi Nitta Kaoru Someya Hideo Abe Atsuo Mutoh Salesian Polytechnic 4-6-8 Oyamagaoka Machida Tokyo 194-0215 Japan Casio Computer Co.3-2-1 Sakae-machi Hamura Tokyo 205-8555 Japan Tokyo Fuji University 3-8-1 Takadano-baba Shinjuku Tokyo 169-0075 Japan

This study experimentally clarifies that the causes by which the radio control clock sometimes fails to receive the standard time signal in the indoors are in the following two factors:（1） The shielding by the conductive materials （used for column,pillar,floor and so on） existing close to the radio control clock.（2） The missing of tuning and the change of Q of the antenna due to the closely existing conductive materials.

关键词： electromagnetic scattering Conducting materials Conductivity measurement Magnetic field measurement Receiving antennas Clocks Radio control Antenna measurements Attenuation measurement Measurement standards

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Time Domain Inverse scattering Analysis of Stratified Lossy Media Using a Forward-Backward Time-Stepping Method

Time Domain Inverse Scattering Analysis of Stratified Lossy ...

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2004 3rd International Conference on Computational electromagnetics and Its Applications

作者： Hongting Jia Kiyotoshi Yasumoto Department of Computer Science and Communication Engineering Kyushu University 36 Fukuoka 812-8581Japan

＜正＞An improved Forward-Backward TimeStepping （FBTS） method has been *** this method,the distribution of estimate electrical parameters in seeking region is expanded in terms of Fourier series,to get a new gradient by controlling the number of the series truncation.A very convenience edge-preserving regularization has been proposed.

关键词： Time domain analysis Inverse problems Fourier series Frequency electromagnetic measurements Parameter estimation electromagnetic scattering scattering parameters electromagnetic fields Material properties

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The Fast electromagnetic Analysis and RCS Reducing of Two Dimensional Complex Targets

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Journal of Electronic Science and Technology of China 2005年第1期3卷 93-93页

作者： LIUHong-xing SchoolofMicroelectronicsandSolid-StateElectronics UESTCChengdu610054China

Radar scattering characteristic of the aircraft is an important factor for its survivability. Wings are one of the important scattering sources on the aircraft. In order to reduce their RCS, the intense and powerful electromagnetic analysis is needed. For reducing the complexity, the wings can be viewed as a two dimensional large electric objects consisting of both conductors and inhomogeneous dielectrics. In this dissertation, we aim at a precision and efficiency method for numerical computing of two dimension objects. Moded wings and the RCS of the wings can be calculated in turn. The RCS results of different wing are compared and examined, and the stealth technology of wing is found out. scattering mechanism are explained, which can give strong predictive power for stealth technology of aircraft.

关键词： electromagnetic scattering radar cross section stealth technology hybrid methods

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