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2022-08-22
Mutual Impedance Computation of a Waveguide Slot-Fed Arbitrary Patch Using Combined Conventional Moment Method and Equivalent Electric and Magnetic Dipole Method
By
Progress In Electromagnetics Research C, Vol. 123, 61-73, 2022
Abstract
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.
Citation
Mehri Hosseini Keyvan Forooraghi Ali Abdolali , "Mutual Impedance Computation of a Waveguide Slot-Fed Arbitrary Patch Using Combined Conventional Moment Method and Equivalent Electric and Magnetic Dipole Method," Progress In Electromagnetics Research C, Vol. 123, 61-73, 2022.
doi:10.2528/PIERC22042805
http://www.jpier.org/PIERC/pier.php?paper=22042805
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