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Volume 12
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10.3390/electronics12183849
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Article

W-Band Broadband Circularly Polarized Reflectarray Antenna

by
Zhicheng Wang
1,2,
Rui Zhang
1,*,
Wenke Song
1,2,
Bingchuan Xie
1,2,
Xiaobo Lin
1,2,
Haixuan Li
1,2 and
Lu Tian
1,2
1
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
2
The School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100408, China
*
Author to whom correspondence should be addressed.
Electronics 2023, 12(18), 3849; https://doi.org/10.3390/electronics12183849
Submission received: 12 July 2023 / Revised: 18 August 2023 / Accepted: 7 September 2023 / Published: 12 September 2023
(This article belongs to the Topic Antennas)
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Abstract

We propose a W-band circularly polarized reflectarray antenna in this article, which contains a single-layer reflectarray and a linearly polarized horn feed. To realize the proposed antenna, we designed a novel W-band multi-resonant element containing a Rogers RT5880 substrate with copper patches printed on its both surfaces. Then, a circular reflectarray with 12.25 λ0 (39.1 mm) aperture diameter was designed based on the proposed multi-resonant element, whose center frequency is 94 GHz. We further fabricated the proposed circular reflectarray and tested its performance. In the measured results, we can see that the obtained 1 dB gain bandwidth is 19.1% (91~109 GHz) and the obtained 2 dB gain bandwidth can reach as wide as 27.6% (89~115 GHz). Moreover, the 3 dB axial ratio bandwidth is 13.8% (89~102 GHz). The measured gain of our proposed reflectarray antenna at 94 GHz is 29.1 dBi and the corresponding aperture efficiency can reach as high as 52.0%. Those results show that our proposed antenna may be prospective in wireless communication applications due to its strengths in broadband and high aperture efficiency.
Keywords: W-band; reflectarray; broadband; circularly polarized W-band; reflectarray; broadband; circularly polarized

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MDPI and ACS Style

Wang, Z.; Zhang, R.; Song, W.; Xie, B.; Lin, X.; Li, H.; Tian, L. W-Band Broadband Circularly Polarized Reflectarray Antenna. Electronics 2023, 12, 3849. https://doi.org/10.3390/electronics12183849

AMA Style

Wang Z, Zhang R, Song W, Xie B, Lin X, Li H, Tian L. W-Band Broadband Circularly Polarized Reflectarray Antenna. Electronics. 2023; 12(18):3849. https://doi.org/10.3390/electronics12183849

Chicago/Turabian Style

Wang, Zhicheng, Rui Zhang, Wenke Song, Bingchuan Xie, Xiaobo Lin, Haixuan Li, and Lu Tian. 2023. "W-Band Broadband Circularly Polarized Reflectarray Antenna" Electronics 12, no. 18: 3849. https://doi.org/10.3390/electronics12183849

APA Style

Wang, Z., Zhang, R., Song, W., Xie, B., Lin, X., Li, H., & Tian, L. (2023). W-Band Broadband Circularly Polarized Reflectarray Antenna. Electronics, 12(18), 3849. https://doi.org/10.3390/electronics12183849

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