期刊
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
卷 49, 期 2, 页码 339-345出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEMC.2007.897156
关键词
absorbing media; anechoic chambers; frequency-selective surfaces (FSS)
This paper describes a novel, lightweight technique for significantly improving the low-frequency reflectivity performance of conventional geometric transition radar absorbent materials as used typically in anechoic chamber facilities for electromagnetic compatibility testing. The improvement is achieved by the inclusion of impedance-loading elements within the base region of the absorber, and these are implemented in the form of one or more frequency-selective surfaces (FSS). The discussion covers the design of the FSS using Computer Simulation Technology Microwave Studio, its predicted effect on absorber performance at both normal and oblique incidence, the effect of manufacturing tolerances, and the fabrication and characterization of a prototype-loaded absorber panel.
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