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2023-01-04
Circularly Polarized Conformal Antenna with Dual V-Shaped Coupling Feed Lines
By
Progress In Electromagnetics Research Letters, Vol. 108, 85-92, 2023
Abstract
A wideband, compact and flexible conformal circularly polarized antenna (CCPA) with ground plane is proposed in this letter. It consists of a polygonal patch, two V-shaped coupling feed lines, a phase-shift transmission line and two layers of metallic ground planes. Two resonant modes are generated by cutting one vertex of the octagonal patch to broaden the operational bandwidth. An L-shaped ground plane is designed on the back of the top substrate. This configuration can obtain a relatively compact phase shifter on the one hand and make the coupling branches and octagonal patch share one ground plane on the bottom, improving the thickness of the antenna which yields wide bandwidth on the other hand. The CCPA can own good performances both in the planar and cylindrical carriers. Under the cylindrical conformal circumstance, the measured |S11| and axial ratio (AR) bandwidth reach 12.05% (5.5 GHz-6.205 GHz) and 8.93% (5.67 GHz-6.2 GHz), respectively. The measured gain is 8.5 dBic with 3 dB gain bandwidth covering the whole operational band.
Citation
Zhengkun Yang Na Kou Shixing Yu Jubo Guo , "Circularly Polarized Conformal Antenna with Dual V-Shaped Coupling Feed Lines," Progress In Electromagnetics Research Letters, Vol. 108, 85-92, 2023.
doi:10.2528/PIERL22102902
http://www.jpier.org/PIERL/pier.php?paper=22102902
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