期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 70, 期 2, 页码 922-930出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2021.3111234
关键词
Scattering; Antennas; Metasurfaces; Varactors; Capacitance; Gain; Antenna arrays; Fabry-Perot (F-P) antenna; radar cross section (RCS); scattering beam reconfiguration
资金
- National Natural Science Foundation of China [61871309, 61801346]
- 111 Project
- Fundamental Research Funds for the Central Universities [ZDRC2101, XJS200208]
- China Postdoctoral Science Foundation [2018M640953]
- Shaanxi Postdoctoral Science Foundation
This article introduces a low radar cross section (RCS) and high-gain Fabry-Perot (F-P) antenna with reconfigurable scattering beams based on varactor diodes, achieving signal modulation through changing the capacitance. Both experimental and simulated results show promising outcomes for the proposed antenna design.
In this article, a low radar cross section (RCS) and high-gain Fabry-Perot (F-P) antenna with reconfigurable scattering beams based on varactor diodes is proposed. The partially reflecting surface (PRS) of the proposed F-P antenna is composed of an anisotropic frequency-selective absorber (AFSA) and an active phase gradient metasurface (PGM) loaded with varactor diodes. The proposed AFSA can absorb the cross-polarized wave and make the co-polarized wave pass through. The in-band co-polarized scattering beams can be tuned continuously with stable radiation beams by changing the capacitance of the varactor diodes. Therefore, the proposed device can reduce the RCS for in-band co- and cross-polarized incident waves. Moreover, taking advantage of the path difference between the radiating and scattering waves, the gain enhancement and RCS reduction (RCSR) are realized simultaneously. Simulated results show that the scattering beam can be tuned dynamically from -40 degrees to 40 degrees with a maximum gain enhancement of 7.2 dB. The co-polarized in-band reconfigurable scattering beam and the stable gain enhancement are first implemented in a single antenna. A significant monostatic RCSR is obtained for the co- and cross-polarized wave in the frequency band of 5.5-7 GHz with a maximum reduction value of 20 dB. The experimental and simulated results are in good agreement.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据