A novel single‐layer quasi‐self‐complementary element for broadband reflectarray antennas. Issue 12 (23rd August 2021)

• Record Type: Journal Article
• Authors: Ning, Peng; Zhu, Hong; Guo, Lu; Feng, Wenjie
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 31:Issue 12(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-08-23
• Subjects: broadband -- quasi‐self‐complementary structure -- reflectarray -- single layer -- subwavelength -- ultrawideband; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.22883
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: A broadband single‐layer reflectarray adopting quasi‐self‐complementary (QSC) elements is studied and developed. The unit cell is formed by a strip in an inverted L shape and a slit also in an inverted L shape etched within a rectangular patch, constituting a QSC configuration. By varying the length of the QSC structure, a rather linear phase range of 370° is achieved, resulting in a broadband characteristic. Employing the novel unit cell, a reflectarray containing 529 elements and offset fed is proposed at 10 GHz. Experiment results present a superior behavior of the reflectarray, including a large 38% bandwidth for a gain drop of 1‐dB, a 59% peak aperture efficiency, and a 28 dB cross polarization discrimination at 10 GHz, respectively.