Abstract
A broadband polarization conversion metasurface (PCM) is proposed for reducing radar cross section (RCS) of antenna. The unit cell of the PCM consists of two pairs of tapered L-shaped strips, a layer of air, and a ground plane. The PCM unit achieves polarization rotation (PR) bandwidth of 117.2% with the polarization conversion ratio (PCR) of 90%. The broadband characteristics of the PCM are studied by an equivalent circuit. The chessboard PCM reduces RCS under a linear polarized (LP) incident wave. The PCM is integrated into a dual-polarized 2 $\times $ 2 H-shaped slot array antenna for RCS reduction. The measured results show that the monostatic RCS of the antenna is reduced by about 10 dB in the frequency range of 9.6-33.1 GHz and 9.8-33.2 GHz for $x$ - and $y$ -polarization under normal incidence, respectively, while the radiation performance of the antenna remains unchanged.
| Original language | English |
|---|---|
| Pages (from-to) | 3834-3839 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 70 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 May 2022 |
Keywords
- Dual-polarized slot array antenna
- polarization conversion metasurface (PCM)
- radar cross section (RCS)