2023, Volume 30, Issue 11
Engineering >> 2023, Volume 30, Issue 11 doi: 10.1016/j.eng.2023.07.015
An Approximate Analytical Method for a Slot Ring Radome
National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, Wuhan 430033, China
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Abstract
In this paper, an in-band and out-of-band microwave wireless power-transmission characteristic analysis of a slot ring radome based on an approximate analytical method is proposed. The main contribution of this paper is that, in the approximate analysis of the ring radome, a unified expression of the incident field on the radome surface is derived with E-plane and H-plane scanning, and the ring is approximated as 30 segments of straight strips. Solving the corresponding 60 × 60 linear equations yields the electric current distribution along the ring strip. The magnetic current along the complementary slot ring is obtained by duality. Thanks to the fully analytical format of the current distribution, the microwave wireless power-transmission characteristics are efficiently calculated using Munk's scheme. An example of a slot ring biplanar symmetric hybrid radome is used to verify the accuracy and efficiency of the proposed scheme. The central processing unit (CPU) time is about 690 s using Ansys HFSS software versus 2.82 s for the proposed method.
Keywords
Approximate analytical ; Ring ; Radome ; Kirchhoff-type circuit
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