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Type: Journal article
Title: A wideband dual-cavity-backed circularly polarized crossed dipole antenna
Author: Truong, K.N.
Huy, H.T.
Nghia, N.-T.
Citation: IEEE Antennas and Wireless Propagation Letters, 2017; 16:3135-3138
Publisher: Institute of Electrical and Electronics Engineers
Issue Date: 2017
ISSN: 1536-1225
Statement of
Truong Khang Nguyen, Huy Hung Tran, Nghia Nguyen-Trong
Abstract: A novel wideband dual-cavity-backed circularly polarized (CP) crossed dipole antenna is presented in this letter. The exciter of the antenna comprises two classical orthogonal straight dipoles for a simple design. Dual-cavity structure is employed to achieve unidirectional radiation and improve the broadside gain. In particular, the rim edges of the cavity act as secondary radiators, which contribute to significantly enhance the overall CP performance of the antenna. The final design with an overall size of 0.57λ o × 0.57λ o × 0.24λ o where λ o is the free-space wavelength at the lowest CP operating frequency of 2.0 GHzb yields a measured -10 dB impedance bandwidth (BW) of 79.4% and 3 dB axial-ratio BW of 66.7%. The proposed antenna exhibits right-handed circular polarization with a maximum broadside gain of about 9.7 dBic.
Keywords: Cavity antenna; circularly polarized (CP); crossed dipole; dual-cavity; wideband
Rights: © 2017 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
DOI: 10.1109/LAWP.2017.2764923
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Electrical and Electronic Engineering publications

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