TY - GEN
T1 - Characteristic Mode Analysis for Inhomogeneous Media
AU - Wu, Di
AU - Wu, Qi
AU - Dai, Chunliang
AU - Zhang, Peng
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - This paper considers the characteristic mode analysis (CMA) of inhomogeneous media. The proposed method adopts volume current density as unknows and formulates a volume integral equation (VIE). Half-SWG and SWG basis functions are chosen to expand the volume current density, since it is discontinuous at interface between different media. The method of moment (MoM) with Galerkin scheme is used to discretize the integral equation. The obtained impedance matrix is composed of a diagonally-dominant Gram matrix and a scattering matrix which is free from the influence of media parameters. This whole operator can be approximately viewed as symmetric, which guarantees a good orthogonality of radiation modes. Numerical results are presented to validate the feasibility as well as the accuracy of this approach.
AB - This paper considers the characteristic mode analysis (CMA) of inhomogeneous media. The proposed method adopts volume current density as unknows and formulates a volume integral equation (VIE). Half-SWG and SWG basis functions are chosen to expand the volume current density, since it is discontinuous at interface between different media. The method of moment (MoM) with Galerkin scheme is used to discretize the integral equation. The obtained impedance matrix is composed of a diagonally-dominant Gram matrix and a scattering matrix which is free from the influence of media parameters. This whole operator can be approximately viewed as symmetric, which guarantees a good orthogonality of radiation modes. Numerical results are presented to validate the feasibility as well as the accuracy of this approach.
KW - Characteristic mode analysis
KW - inhomogeneous media
KW - volume integral equation
UR - https://www.scopus.com/pages/publications/85148286531
U2 - 10.1109/CAMA56352.2022.10002618
DO - 10.1109/CAMA56352.2022.10002618
M3 - 会议稿件
AN - SCOPUS:85148286531
T3 - IEEE Conference on Antenna Measurements and Applications, CAMA
BT - 2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022
PB - Institute of Electrical and Electronics Engineers
T2 - 2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022
Y2 - 14 December 2022 through 17 December 2022
ER -