Broadband Circularly Polarized Metasurface Antenna Fed by a Rotated L-Shaped Probe

Broadband Circularly Polarized Metasurface Antenna Fed by a Rotated L-Shaped Probe
Title:
Broadband Circularly Polarized Metasurface Antenna Fed by a Rotated L-Shaped Probe
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European Conference on Antennas and Propagation (EuCAP) 2020
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Publication Date:
15 March 2020
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Abstract:
A broadband low-profile circularly polarized (CP) metasurface antenna fed by a single rotated L-probe is proposed. With the L-shaped probe feed, an additional surface wave resonance is excited on the finite metasurface to enhance the bandwidth of the antenna. The single rotated L-probe fed asymmetrical metasurface antenna yields an overlapped impedance/gain/axial-ratio bandwidth of 20.7% from 5.71 GHz to 7.03 GHz, a peak gain of 8.85 dBic, and FBR higher than 19 dB, covering the 6-GHz band for coming WiFi 7 applications. Experiments are carried out as well to validate the proposed CP antenna design.
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