Abstract
This work details a technique tailored to the analysis of complex radome structures based on the non-overlapping separation of two different domains: antenna and radome. Both domains are analyzed isolated using the method of moments with the multilevel fast multipole algorithm (MoM-MLFMA) for the antenna domain and a modified characteristic basis function method with the multilevel fast multipole algorithm approach for the radome domain. An iterative procedure is then applied to compute the effect of each domain over the complementary domain. This approach usually converges into a few iterations, yielding very good results and significant efficiency improvements with respect to other efficient approaches such as a full-wave MoM-MLFMA analysis of the full problem. A realistic test case is included, considering a radome with an embedded frequency selective structure on one of its interfaces. The results show a very good agreement considering only three iterations between domains, requiring only one-third of the CPU-time needed by the conventional approach.
Highlights
This work describes a full-wave analysis technique focused on the analysis of complex multilayered radomes containing frequency selective surfaces (FSSs), by means of a dual domain decomposition scheme where the antenna and radome domains are analyzed using a combination of the characteristic basis function method (CBFM)
4, 4, contains a a Cassegrain reflector antenna fed by a conical horn, and this radiating system is covered by Cassegrain reflector antenna fed by a conical horn, and this radiating system is covered a hemispherical dome composed by two radomes: one at the top containing two dielectric by a hemispherical dome composed by two radomes: one at the top containing two dielayers with an FSS embedded within the inner interface, and a lectric layers with an FSS embedded within the inner interface, second radome at the bottom containing a single layer of dielectric
The work presented in this document describes the development of a numerical Thetechnique work presented in on thiscomplex document describes the development of a numerical analanalysis focused radomes covering arbitrary antennas, by means ysis focused complex(antenna radomesand covering arbitrary by meansusing of the of thetechnique separation of bothondomains radome) and anantennas, iterative approach separation offunctions both domains computational byusing this kind of problem
Summary
Radomes are used with many common industrial purposes [1,2,3], such as telecommunications, vehicular, maritime or automotive applications, defense systems, air traffic control, satellite communications, aircrafts, and more It is a part of the antenna system [4,5,6,7,8,9], which can seriously affect and degrade the transmitted and received signals, and is a key element on the radar cross section (RCS) [10] of the platform on which it is mounted. This work describes a full-wave analysis technique focused on the analysis of complex multilayered radomes containing FSS, by means of a dual domain decomposition scheme where the antenna and radome domains are analyzed using a combination of the CBFM and the MLFMA.
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