Nasimuddin, Xianming Qing, and Z. N. Chen, "Broadband Single-feed Metasurface-based Circularly Polarized Antennas", IEEE Tencon 2024, 1-4 Dec. 2024, Singapore
Abstract:
This paper studies metasurfaces for low-profile single-feed circularly polarized (CP) antenna design with
broadband performance. The antenna comprises a metasurface, a rectangular patch (RP) radiator, and a coaxial probe. A comparative analysis of the antenna's performance over five different metasurface configurations is presented and discussed. Key design parameters including the aspect ratios of the RP radiator as well as a metasurface unit cell, the number of unit cells, and the feed location along the diagonal
line, are crucial for optimizing the broadband CP performance. The antenna prototype, utilizing a metasurface with 7×7 rectangular-patch-unit cells, achieves a bandwidth of 22.2% (3.6 GHz4.5 GHz) for axial ratio 3dB, gain > 6.0dBic, and VSWR≤2.0 with an overall antenna dimension of 80.0mm × 60.0mm × 4.8mm (1.080 × 0.810 × 0.0650 at 4.05 GHz).
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the Economic Development Board (EDB), Singapore - Office for Space Technology and Industry (OSTIn) Space Technology Development Programme
Grant Reference no. : S23-020013-STDP