An Efficient Scheme of Waveguide Port Modeling Based on Conformal and Nonuniform Mesh for Time-Domain Finite Integration Technique

被引:0
|
作者
Lin, Guanjie [1 ]
Huang, Tao [1 ]
Cai, Wenjin [1 ]
Gong, Dapeng [1 ]
Jin, Xiaolin [1 ]
机构
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Vacuum Elect Natl Lab, Chengdu 610054, Peoples R China
关键词
Time-domain analysis; Electromagnetic waveguides; Numerical models; Scattering parameters; Accuracy; Finite difference methods; Waveguide theory; Solid modeling; Finite element analysis; Computational efficiency; Conformal; contour integrated theorem (CIT); finite difference frequency domain (FDFD); nonuniform; time-domain finite integration technique (TDFIT); waveguide port; ELEMENT-ANALYSIS; BAND; IMPLEMENTATION; SIMULATIONS; ALGORITHM; FIELD;
D O I
10.1109/TAP.2024.3511919
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A general numerical scheme for waveguide port modeling based on the contour integrated theorem (CIT) is proposed to improve the accuracy and efficiency, which is fully compatible with the 3-D time-domain finite integration technique (TDFIT). In this scheme, a compact 2-D finite-difference frequency-domain (FDFD) method with conformal and nonuniform mesh is derived, along with a novel method for accurately applying the perfect magnetic conductor (PMC) boundaries in this method. An improved two-component form is also developed and used in a 2-D eigenmode solver. Then, the positive-negative (P-N) transparent source is improved to be compatible with the TDFIT method based on the CIT for source feeding, and a novel implementation scheme of waveguide port based on a virtual domain suitable for the P-N source is also proposed. Finally, a simplified S-parameter extraction scheme that requires only modal voltage is proposed. Numerical examples are given to validate the proposed numerical scheme, and the results show good accuracy, lower memory consumption, and higher computational efficiency.
引用
收藏
页码:1047 / 1058
页数:12
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