Abstract
In this letter, a reflective polarization-independent second-order cross-polarization conversion metasurface with high frequency selectivity for antiinterference in S-band using guided wave inspired technology is designed. The polarization conversion metasurface is composed of three metallic layers. An L-shaped microstrip line is designed in the bottom layer for polarization conversion. A folded square loop slot is designed in the ground plane of the middle layer to introduce two low-frequency polarization conversion zeros and enhance the frequency selectivity. After simulation and measurement, the polarization conversion ratio of the metasurface reaches 99.93% at the operating frequency of 2.65 GHz, the first zero is at 2.443 GHz, and the low frequency selectivity is 668.85 dB/GHz. The second zero is at 2.395 GHz for eliminating the interference from cell phones and WiFi signals. The insertion loss is less than 1 dB in the band.
| Original language | English |
|---|---|
| Pages (from-to) | 3077-3081 |
| Number of pages | 5 |
| Journal | IEEE Antennas and Wireless Propagation Letters |
| Volume | 22 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2023 |
Keywords
- Folded square loop
- frequency selectivity (FS)
- metasurface
- polarization conversion (PC)
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