Abstract
In this study, a resistive-type wave absorber at two frequencies in X and Ku bands using a frequency selective surface (FSS) is examined. First, basic characteristics of the FSS for one frequency and two frequencies are examined theoretically and experimentally. Second, two types of wave absorbers using the FSS are proposed, which are fabricated by two absorption films and two FSS films, respectivery. As a result, good absorption and shielding characteristics of the present wave absorbers are realized for practical use. Moreover the design of the two absorption film type wave absorber can be performed by point matching method. As to the design of the FSS type wave absorber, we also confirm that the design of the conventional single-layer wave absorber can be utilized.
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