| Autor: |
Truong Le-Huu, Son Xuat Ta, Khac Kiem Nguyen, Chien Dao-Ngoc, Nghia Nguyen-Trong |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 10, Pp 94616-94623 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2022.3204891 |
| Popis: |
In this paper, a dual-polarized filtering Fabry-Perot antenna (FPA) with high-isolation is proposed. It consists of a feed element of differential-fed dual-polarized square patch and a partially reflecting surface (PRS). The patch is capacitively coupled with T-shaped resonators and shorting-vias to obtain broadband characteristic and radiation nulls. The PRS structure is composed of two complementary metasurface layers, which are selected for achieving a positive reflection phase gradient within the broad frequency range. More interestingly, thanks to the frequency selectivity feature, the PRS significantly enhances the filtering characteristic of the FPA. For verification, a prototype of the proposed antenna operating at the 5.5-GHz center frequency has been fabricated and measured. The prototype with an overall size of $\sim 2.0\lambda _{\text {min}} \times 2.0\lambda _{\text {min}} \times 0.49\lambda _{\text {min}}$ ( $\lambda _{\text {min}}$ is the free-space wavelength referring to the lowest operational frequency) result in an impedance bandwidth of 17.1% ( $5.02-5.96$ GHz) for 10-dB return loss and a high isolation of $\ge45$ dB. Moreover, the far-field measurements result in a good dual-polarized radiation with the peak gain of 13.0 dBi, cross-polarization level of $\le $ –25 dB within the passband, and out-of-band suppression level of $\ge20$ dB. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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