Abstract
In this paper, the radiation and scattering characteristics of a broadband miniaturized Vivaldi antenna are simulated. The proposed antenna operates at 3.6GHz-15.6GHz. Through calculation, the multi-layer absorbing material with the best broadband absorption loss is obtained, and the RCS reduction is effectively realized by loading RAM on the antenna metal floor. The simulated results between the reference antenna and the antenna loaded with RAM show that the RCS reduction of more than 10 dB under the incident angle of nearly ±70° in the xoz plane is realized, while the radiation performance of the antenna with RAM is well preserved, which proves the significance of absorbing material loading for antenna RCS reduction.
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