Characteristic Mode Inspired Dual-Polarized Double-Layer Metasurface Lens
| Autor: | Yizhu Shen, Teng Li, Jingwen Sun, Zhi Ning Chen, Sanming Hu, Hongfu Meng, Wenbin Dou, Thomas Zwick |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
business.industry Aperture Phase (waves) 020206 networking & telecommunications 02 engineering and technology law.invention Lens (optics) Electric dipole moment Dipole Optics Planar law Characteristic mode analysis 0202 electrical engineering electronic engineering information engineering Transmission coefficient Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Antennas and Propagation. 69:3144-3154 |
| ISSN: | 1558-2221 0018-926X |
| DOI: | 10.1109/tap.2020.3046423 |
| Popis: | In the following, we propose a dual-polarized double-layer metasurface lens based on split dipole unit cells. The characteristic mode analysis (CMA) of a split electric dipole shows two characteristic modes over the band of interest. By exciting these two modes with a certain phase difference, the reflection at normal incidence can be canceled. Inspired by this idea, a planar dual-polarized unit cell based on four pairs of split electric dipoles is designed on a single-layer substrate. A phase range of 396° and a transmission coefficient with a magnitude higher than 0.8 are achieved. For experimental verification, a metasurface lens with $36\times36$ elements is designed at 30 GHz with a focal diameter ratio of 0.84. The measured peak gain is 31.6 dBi at 31 GHz with an aperture efficiency of 45% and 1 dB/3 dB gain bandwidth of 7.3%/14%, respectively. Due to the dual-polarized operation, the relative high aperture efficiency, and the low-cost design, the proposed metasurface lens is a promising candidate for millimeter-wave communication, e.g., 5G and satellite communication systems. |
| Databáze: | OpenAIRE |
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