期刊
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
卷 95, 期 -, 页码 47-51出版社
ELSEVIER GMBH
DOI: 10.1016/j.aeue.2018.08.011
关键词
Radar cross section (RCS); Stealth antenna; Vivaldi antenna; Object shaping method; Wideband
资金
- China Postdoctoral Science Foundation [2018M631161]
- Shaanxi Province Postdoctoral Science Foundation [2017BSHYDZZ14]
- Fundamental Research Funds for the Central Universities [XJTU1191329860]
- Technology Program of Shenzhen [JCYJ20170816100722642]
- Natural Science Foundation of Shaanxi Province [2018JQ6081]
In this paper, a low radar cross section (RCS) Vivaldi antenna is proposed. The main objective of this work is to achieve a reasonable RCS reduction without affecting the radiation performance of the antenna. With carefully inspecting the surface current distributions at different frequencies and realizing the critical role of the structural mode in reducing RCS, a simple and efficient object shaping method is employed by introducing a number of circular slots in the surface of the radiator to achieve the RCS reduction. These circular slots along the inner circular profile of the Vivaldi antenna can minimize the scattering along the surface of the radiator, which hence leads to a reduction in the monostatic RCS. Comparing the measured results between the reference antenna and the proposed antenna, a significant 11 dB RCS reduction is obtained while maintaining good radiation performance. Simulated and measured results including S-parameters, gain, RCS of the reference antenna and the proposed antenna are presented. (C) 2018 Elsevier GmbH. All rights reserved.
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