Fast Analysis of Parallel-Plate Cylindrical Luneberg Lens Antennas Through Dyadic Green's Functions

被引：17
|
作者：
Zhang, Zhe [1 ]
Yang, Shiwen [1 ]
Chen, Yikai [1 ]
Qu, Shiwei [1 ]
Hu, Jun [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 611731, Sichuan, Peoples R China
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2018年 / 66卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Cylindically stratified media; dyadic Green's functions (DGFs); Luneberg lens antenna; parallel-plate waveguide; SPECTRAL-DOMAIN; COMPUTATION; SCATTERING; MODEL; MEDIA;
D O I：
10.1109/TMTT.2018.2856239
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：
An accurate analytic and computationally efficient method based on dyadic Green's function (DGF) is presented for the analysis of parallel-plate cylindrical Luneberg lens antennas. DGFs for electric and magnetic current sources are rigorously derived for an infinite parallel-plate waveguide filled with radially stratified media, which is the ideal model of cylindrical Luneberg lens antennas. The DGF for the electric current source is constituted of cylindrical vector wave functions and their associated coefficients, which is developed from the scattering superposition and the corresponding matching of boundary conditions, respectively. The DGF for the magnetic current source is proved to be directly related to the DGF for the electric current source by applying the second-kind vector Green's theorem. The proposed DGFs and the aperture field method are then applied to analyze the radiation characteristics of parallel-plate cylindrical Luneberg lens antennas with equivalent sources. Numerical results of several large-sized parallel-plate cylindrical Luneberg lens antennas show that the results of the proposed approach are in good agreement with those from commercial software simulations. The proposed approach has much less computational costs and can be used for the fast analysis of large-sized cylindrical Luneberg lens antennas.
引用
收藏
页码：4327 / 4337
页数：11
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