Dual-Band Shared-Aperture Antenna with Single-Layer Partially Reflecting Surface

• DOI: 10.36227/techrxiv.22179637.v1
• Publication Date: 2023-03-02T02:58:01Z
• Authors: QIUYAN LIANG; Buon Kiong Lau; Gaonan Zhou
• Keywords: Multi-band device; Dual layer

<p> Dual-band shared-aperture Fabry-Pérot cavity (DS-FPC) antennas with single-layer partially reflective surface (PRS) are inherently limited in the achievable frequency ratio. This paper analyzes such to derive feasible range of ratio and thereafter proposes a dual-band antenna that can fill gap. The proposed integrates short backfire (SBA) for low band (LB) (FPC) high (HB), utilizing shared PRS parasitic element. In LB, using element is transparent HB, SBA works well despite its profile. FPC first-order mode. A prototype working at 5.5GHz 9GHz was fabricated measured. overall height 0.36 0.59 wavelength LB respectively. achieves 7.3% 6.7% measured overlapping 10dB impedance bandwidth 3dB realized gain bandwidth, as peak gains 10.3 14.6dBi, </p>