Mutual Impedance Computation of a Waveguide Slot-Fed Arbitrary Patch Using Combined Conventional Moment Method and Equivalent Electric and Magnetic Dipole Method

作     者：Hoseini, Mehri Forooraghi, Keyvan Abdolali, Ali 

作者机构：Department of Electrical and Computer Engineering Tarbiat Modares University Tehran Iran Department of Electrical Engineering Iran University of Science and Technology Tehran Iran 

出 版 物：《Progress In Electromagnetics Research C》 (Prog. Electromagn. Res. C)

年 卷 期：2022年第123卷

页      面：61-73页

核心收录：

学科分类：080805[工学-电工理论与新技术] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0835[工学-软件工程] 0701[理学-数学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：National Science Foundation(1840381) 

主　　题：Method of moments 

摘      要：This paper proposes computing the mutual impedance of a multi-layer patch fed by a slotted waveguide using the combined equivalent electric and magnetic dipole-moment method and conventional moment method (EDM-MOM) as an efficient technique. The slot, PEC, and dielectric regions are substituted with equivalent currents. The unknown currents are expanded using the Rao-Wilton-Glisson and Schaubert-Wilton-Glisson basis functions. The matrix equations are then extracted from the boundary conditions. Using the EDM, each RWG or SWG of the PEC and dielectric is equivalent to an infinitesimal electric dipole, and that of the slot is equivalent to a magnetic dipole. The element matrix related to the waveguide excitation is calculated using the conventional moment method due to simple integration and accuracy. Further, the superposition of the mutual coupling between each equivalent electric or magnetic dipole in the first element and each dipole in the second element is used to obtain the mutual impedance of the two elements of the waveguide slot-fed patch array. The proposed method shows good agreement with CST software simulation results. © 2022, Electromagnetics Academy. All rights reserved.