金铭等：On the Transmitted Beam Degradation through FSS in the Working Band by Plane-wave Spectrum Computation and Evaluation

On the Transmitted Beam Degradation through FSS in the Working Band by Plane-wave Spectrum Computation and Evaluation

作者:Jin, M (Jin, Ming)[ 1,2 ] ; Bai, M (Bai, Ming)[ 2 ]

APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL

卷: 31  期: 9  页: 1135-1143

出版年: SEP 2016

摘要

In this paper, we implemented the combination of FDTD (Finite Difference Time Domain) and the plane-wave spectrum (PWS) algorithms, to evaluate beam transmission through frequency selective surface (FSS) in the near field region. The hybrid method takes advantage of the FDTD for the wideband analysis ability, and that of the PWS theory in the rapid re-composition for transmitted fields due to variable beam incidence. Consequently, it meets the need of beam transmission evaluation in the working band when the FSS is located among a serial of components, as in a millimeter Quasi-Optical (QO) instrument. After verifying the hybrid approach by results of other methods, we studied the degradations in the transmitted beams through an FSS design within the band of interest. The investigations are performed at the view of the transmission coefficient distributions in the PWS. It is found that the transmitted beam distortion is due to the non-flatness of the transmission coefficient distribution in the spectrum region covered by the beam incidence.

关键词

通讯作者地址: Jin, M (通讯作者)

Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China.

通讯作者地址: Jin, M (通讯作者)

Beihang Univ, Sch Elect Informat Engn, Beijing 100191, Peoples R China.

地址:

[ 1 ] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China

[ 2 ] Beihang Univ, Sch Elect Informat Engn, Beijing 100191, Peoples R China