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|Title:||A wideband dual-cavity-backed circularly polarized crossed dipole antenna|
|Citation:||IEEE Antennas and Wireless Propagation Letters, 2017; 16:3135-3138|
|Publisher:||Institute of Electrical and Electronics Engineers|
|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.|
|Appears in Collections:||Aurora harvest 4|
Electrical and Electronic Engineering publications
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