期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 17, 期 8, 页码 1386-1390出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2018.2846663
关键词
Circularly polarized (CP); high efficiency; reflectarray; single-layered
资金
- National Natural Science Foundation of China [61372034]
In this letter, we present a single-layered circularly polarized reflectarray antenna with a broad operating bandwidth in terms of realized gain, axial ratio (AR), radiation pattern, and aperture efficiency (AE). By employing multiple plasmon resonances, the proposed quasi-I-shaped element achieves a broadband linearly polarized conversion effect, which will contribute to a broadband reflectarray design. Thus, based on the element angular rotation method, a broadband offset-fed reflectarray with size of 215 x 215 mm(2) and cells of 43 x 43 is designed, simulated, and then fabricated and measured. Good performances can he observed from both simulated and measured results, which confirm that the reflectarray antenna achieves a 75% 3 dB AR bandwidth (10-22 GHz) and a 49.7% 3 dB gain bandwidth (12.4-20.6 GHz). Furthermore, the measured AE exceeds 50% within a 28.2% bandwidth.
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