RCS Reconfiguration of an Antenna Array Based on the 1-bit Reconfigurable Load Impedance

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-13 DOI:10.1109/TAP.2025.3526909

Binchao Zhang;Fan Yang;Shenheng Xu;Cheng Jin

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Abstract

The radar cross section (RCS) reconfiguration of the antenna is necessary for low-observable platforms. Thus, this article studies the RCS control of the antenna array based on the 1-bit reconfigurable load impedance. First, the tuning method of the antenna scattering field is analyzed theoretically. It is derived that the amplitude and phase of the antenna’s scattering field can be tuned by changing its load impedance. Subsequently, PIN diodes are implemented to control the load impedance. When the PIN diode switches, the antenna’s scattering field meets the condition of equal amplitude and a phase difference of 180°. As a result, the RCS of the antenna array can be controlled. Moreover, by introducing an additional prephase, the inherent symmetric dual-beam issue of 1-bit reconfigurable structures is overcome, achieving single-beam scanning of the scattering field. Finally, a

$1 \times 16$

linear antenna array is designed and fabricated, which operates at 6 GHz with a radiation gain of 16.3 dBi. The scattering beams of the designed array can scan within ±45°, which significantly reduces the in-band and copolarized monostatic RCS. The measured results align well with the simulated ones.

查看原文本刊更多论文

基于1位可重构负载阻抗的天线阵列RCS重构

低可观测平台需要对天线进行雷达截面重构。因此，本文研究了基于1位可重构负载阻抗的天线阵列RCS控制。首先，从理论上分析了天线散射场的调谐方法。推导出可以通过改变天线的负载阻抗来调节天线散射场的幅值和相位。随后，PIN二极管被实现来控制负载阻抗。当PIN二极管开关时，天线的散射场满足等幅和相位差为180°的条件。从而可以控制天线阵的RCS。此外，通过引入额外的前置相位，克服了1位可重构结构固有的对称双波束问题，实现了散射场的单波束扫描。最后，设计并制作了1 × 16的线性天线阵列，其工作频率为6 GHz，辐射增益为16.3 dBi。设计的阵列散射光束可以在±45°范围内扫描，大大降低了带内和共偏振的单稳态RCS。实测结果与模拟结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques