A switchable polarisation conversion/in‐phase reflection metasurface and its application

IET Microwaves, Antennas & Propagation

Kun Wei¹  Jiaolong Zhang¹  Wen Jiang¹ 

[1] School of Electronic Engineering Xidian University Xi'an Shaanxi China;

关键词: p‐i‐n diodes;    antenna radiation patterns;    electromagnetic wave polarisation;    radar cross‐sections;    metamaterial antennas;    electromagnetic wave scattering;   

DOI  :  10.1049/mia2.12186

来源: DOAJ

【 摘 要 】

Abstract A switchable polarisation conversion/in‐phase reflection metasurface (PCIPR‐MS) based on a Pin diode is proposed in this study. By changing the working state of the Pin diode, the PCIPR‐MS can be used as a polarisation conversion metasurface (PCM) and an artificial magnetic conductor (AMC), respectively. Furthermore, the designed PCIPR‐MS can be arranged into a checkerboard surface to integrate with the antenna, which means that the PCIPR‐MS can be flexibly switched to control the radiation and scattering characteristics of the antenna in a time‐sharing manner. The simulation results show that the 3‐dB axial ratio (AR) bandwidth is 4.31 to 6.14 GHz (35%) with the application of the AMC as the metal ground plane of the antenna in the radiation state, and the right‐hand circularly polarised (RHCP) gain is enhanced by more than 1.5 dB from 4.65 to 5.80 GHz in a low‐profile compared with the reference antennas. By using the PCM, phase cancelation is achieved in the scattering state of the antenna to realise the low‐RCS characteristics.

【 授权许可】

Unknown