A Very Wideband Circularly Polarized Crossed Straight Dipole Antenna with Cavity Reflector and Single Parasitic Element

Huy Hung Tran, Minh Thuan Doan, Cong Danh Bui, Nguyen Truong Khang

Abstract


A very wideband circularly polarized (CP) crossed dipole antenna is presented in this paper. The primary radiating element of the antenna consists of two straight dipoles arranged orthogonally through double printed rings. To further enhance the axial ratio bandwidth, a cavity with proper size and single parasitic element are employed to generate two additional bands. The use of cavity reflector is investigated thoroughly, providing a solid framework for designing this type of antennas. The final design with an overall size of 0.92λo × 0.92λo × 0.32λo at the center CP frequency yields a measured –10 dB-impedance bandwidth of 75.2% and 3 dB-axial ratio bandwidth of 67.7%. The proposed antenna exhibits right-handed circular polarization and an average broadside gain of about 8.3 dBi over the CP operating bandwidth.

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References


T. Rappaport and D. Hawbaker, “Wide-band microwave propagation parameters using circular and linear polarized antennas for indoor wireless channels,” IEEE Trans. Commun., vol. 40, pp. 240–245, 1992.

M. F. Bolster, “A new type of circular polarizer using crossed dipoles,” IEEE Trans. Microwave Theory Tech., vol. 9, pp. 385–388, 1961.

S. X. Ta, I. Park, and R. W. Ziolkowski, “Crossed Dipole Antennas: A review,” IEEE Antennas and Propag. Magazine, vol. 57, pp. 107–122, 2015.

J. W. Baik, T. H. Lee, S. Pyo, S. M. Han, J. Jeong, and Y. S. Kim, “Broadband circularly polarized crossed dipole with parasitic loop resonators and its arrays,” IEEE Trans. Antennas Propag., vol. 59, pp. 80–88, 2011.

S. W. Qu, C. H. Chan, and Q. Xue, “Wideband and high-gain composite cavity backed crossed triangular bowtie dipoles for circularly polarized radiation,” IEEE Trans. Antennas Propag., vol. 58, pp. 3157–3164, 2010.

H. H. Tran and I. Park, “Wideband circularly polarized cavity-backed asymmetric crossed bowtie dipole antenna,” IEEE Antennas Wireless Propag. Lett., vol. 15, pp. 358–361, 2016.

M. Li and K. M. Luk, “A wideband circularly polarized antenna for microwave and millimeter-wave applications,” IEEE Trans. Antennas Propag., vol. 62, pp. 1872–1879, 2014.

S. X. Ta and I. Park, “Crossed dipole loaded with magneto-electric dipole for wideband and wide-beam circularly polarized radiation,” IEEE Antennas Wireless Propag. Lett., vol. 14, pp. 358–361, 2014.

X. Bai and S. W. Qu, “Wideband milimeter-wave elliptical cavity-backed antenna for circularly polarized radiation,” IEEE Antennas Wireless Propag. Lett., vol. 15, pp. 572–575, 2016.

R. Xu, J. Y. Li, and W. Kun, “A Broadband Circularly Polarized Crossed-Dipole Antenna,” IEEE Trans. Antennas Propag., vol. 64, pp. 4509–4513, 2016.

J. Yeo and D. Kim, “Design of a wideband artificial magnetic conductor (AMC) ground plane for low-profile antennas,” J. Electromagn. Waves Appl., vol. 22, pp. 2125–2134, 2008.

H. H. Tran and I. Park, “Wideband circularly polarized low-profile antenna using artificial magnetic conductor,” J. Electromagn. Waves Appl., vol. 30, pp. 889–897, 2016.

L. Zhang, T. Gao, Q. Luo, P. R. Young, Q. Li, Y. L. Geng, and A. Abd-Alhameed, “Single-feed ultra-wideband circularly polarized antenna with enhanced front-to-back ratio,” IEEE Trans. Antennas Propag., vol. 64, 355–360, 2016.

H. H. Tran, I. Park I, and T. K. Nguyen, “Circularly polarized bandwidth-enhanced crossed dipole antenna with a simple single parasitic element,” IEEE Antennas Wireless Propag., vol. 16, pp. 1776–1779, 2017.

CST Microwave Studio, CST GmbH, 2016. http://www.cst.com




DOI: http://dx.doi.org/10.21553/rev-jec.193

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