Design of Multifunctional Reflectarray Elements Based on the Switchable Ground Plane

Xianbo Cao, Qiang Chen
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引用次数: 2

Abstract

In this paper, we proposed a novel multifunctional reflectarray (RA) element which consists of resistor layer, switchable ground plane (SGP) layer and ground layer. The SGP consists of a frequency selective surface (FSS) and four PIN diodes. By switching the status of diodes, the SGP operates as ground or transparency to the incident waves thus the distance between the resistor layer and the ground is changed accordingly, which makes the incident power reflected or absorbed by the proposed RA element. The principle is explained and the simulated results show that the reflection coefficient is - 0.18 dB for reflector status and - 20 dB for absorber status. Moreover, the dynamic control of the reflected amplitude can be easily realized by using resistors with different resistance. The additional control of the reflected amplitude makes RA antennas more flexible and powerful in realizing complicated beam-forming applications.
基于可切换地平面的多功能反射元件设计
本文提出了一种由电阻层、可切换地平面(SGP)层和接地层组成的新型多功能反射阵列(RA)元件。SGP由一个频率选择表面(FSS)和四个PIN二极管组成。通过切换二极管的状态,SGP对入射波作为地或透明工作,从而相应地改变电阻层与地之间的距离,从而使入射功率被所提出的RA元件反射或吸收。仿真结果表明,反射器状态下的反射系数为- 0.18 dB,吸收器状态下的反射系数为- 20 dB。此外,采用不同电阻的电阻器可以很容易地实现对反射幅度的动态控制。对反射幅度的额外控制使RA天线在实现复杂波束形成应用方面更加灵活和强大。
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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