A beam-steering antenna with low deflecting-loss enabled by a miniaturized flexible lens. Issue 5 (24th March 2023)

• Record Type: Journal Article
• Authors: Hu, Zhiwei; Zhao, Haojie; Kraman, Mark; Huang, Wen; Tu, Hao; Sang, Lei
• Is Part Of: Journal of electromagnetic waves and applications. Volume 37:Issue 5(2023)
• Page Start: 730
• Page End: 751
• Publication Date: 2023-03-24
• Subjects: Beam steering -- miniaturized flexible lens -- three-segment modulation principle -- low deflecting-loss; Electromagnetic waves -- Periodicals; Electromagnetic devices -- Periodicals; 621.3
• DOI: 10.1080/09205071.2023.2191343
• Languages: English
• ISSNs: 0920-5071

Abstract

Abstract : A miniaturized flexible lens is proposed for beam control of broadband antenna with low deflection loss. Different from traditional approaches to phase modulation, the three-segment principle presented in this article significantly lowers the maximum necessary phase difference generated by modulated waves, thus reducing the height of the lens and antenna profile. The phase modulation performance of the lens is reconfigured by adjusting the layout of the phase modulation units PMUs according to distribution requirements. Then, a Vivaldi antenna utilizing the miniaturized lens is designed, fabricated, and tested to demonstrate the system's beam deflecting characteristics. The experimental results demonstrate the capability of the antenna to cover a deflecting range wider than [−20°, 19°] with deflecting loss below 1.4 dB throughout the entire 8–10 GHz working band. Over the operating band, the deflecting gain is greater than 8.7 dBi.