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- Title
Novel wideband metal‐only transmitarray antenna based on 1‐bit polarization rotation element.
- Authors
Chen, Guan‐Tao; Jiao, Yong‐Chang; Zhao, Gang
- Abstract
In this article, a novel wideband metal‐only transmitarray based on 1‐bit polarization rotation element is proposed. First, a novel wideband polarization rotation element is designed, which consists of four metallic layers without any substrate layers. The element can be used to rotate polarization of the transmission wave by 90° with respect to that of the incident wave. The element and its mirror image can provide 0° and 180° phase shifts with 1‐bit phase quantization in the 9.2 to 11.2 GHz band with more than 80% polarization conversion rate. Then, by using the proposed element, a 21 × 21‐element transmitarray with a standard pyramidal horn feed is designed and fabricated. The measured results show that the transmitarray achieves 16.8% 1‐dB gain bandwidth with a peak gain of 21.6 dBi. Its cross‐polarization and side‐lobe levels are below −20 and −10 dB, respectively, in the operating band. The measured results agree well with the simulation ones, validating effectiveness of the transmitarray design method.
- Subjects
ROTATIONAL motion; MIRROR images; ANTENNAS (Electronics)
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2020, Vol 30, Issue 11, p1
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.22388