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Abstract

A rectangular dielectric resonator antenna (DRA) with a square spiral microstrip feedline is investigated in this paper. The design utilizes a feeding structure to excite two resonant modes (TE_δ11 and TE_1δ1 modes) of the rectangular DRA that are spatially orthogonal in polarization and in phase. The antenna with the proposed feeding structure has provided a measured circular polarization(CP) over a bandwidth of ~15.5% in conjunction with an impedance-matching bandwidth of ~31.25% at the same frequency range. The gain of the dielectric resonator antenna varies between 6.8 and 7.2 dBi across the bandwidth (7.5~8.75 GHz). Reasonable agreement between the simulated and measured results is obtained.

1. Kajfez, D. and P. Guillon, Dielectric Resonators, Artech House, Norwood, MA , 1986.

2. Kumar, A. V. P., V. Hamsakutty, J. Yohannan, and K. T. Mathew, "Microstrip fed cylindrical dielectric resonator antenna with a coplanar parasitic strip," Progress In Electromagnetics Research, Vol. 60, 143-152, 2006.
doi:10.2528/PIER05121301 Google Scholar

3. Saed, M. and R. Yadla, "Microstrip-FED low profile and compact dielectric resonator antennas," Progress In Electromagnetics Research, Vol. 56, 151-162, 2006.
doi:10.2528/PIER05041401 Google Scholar

4. Abdulla, P. and A. Chakraborty, "Rectangular waveguide-FED hemispherical dielectric resonator antenna," Progress In Electromagnetics Research, Vol. 83, 225-244, 2008.
doi:10.2528/PIER08050701 Google Scholar

5. Qian, Z. H., K. W. Leung, and R.-S. Chen, "Analysis of circularly polarized dielectric resonator antenna excited by spiral slot," Progress In Electromagnetics Research, Vol. 47, 111-121, 2004.
doi:10.2528/PIER03102501 Google Scholar

6. Fayad, H. and P. Record, "Multi-feed dielectric resonator antenna with reconfigurable radiation pattern," Progress In Electromagnetics Research, Vol. 76, 341-356, 2007.
doi:10.2528/PIER07071204 Google Scholar

7. Kishak, A. A., "An elliptic dielectric resonator antenna designed for circular polarization with single feed," Microwave and Optical Technology Letters, Vol. 37, 454-456, Jun. 2003.
doi:10.1002/mop.10948 Google Scholar

8. Khoo, K.-W., Y.-X. Guo, and L. C. Ong, "Wideband circularly polarized dielectric resonator antenna," IEEE Transactions on Antennas and Propagation, Vol. 55, No. 7, Jul. 2007. Google Scholar

9. Leung, K. W. and S. K. Mok, "Circularly polarised dielectric resonator antenna excited by perturbed annular slot with backing cavity," Electronics Letters, Vol. 37, No. 15, Jul. 19, 2001. Google Scholar

10. Motevasselian, A., A. Ellgardt, and B. L. G. Jonsson, "A circularly polarized cylindrical dielectric resonator antenna using a helical exciter," IEEE Transactions on Antennas and Propagation, Vol. 61, 1439-1443, Mar. 2013.
doi:10.1109/TAP.2012.2229954 Google Scholar

11. Leung, K.-W. W. and X. S. Fang, "The compact circularly-polarized hollow rectangular dielectric resonator antenna with an underlaid quadrature coupler," IEEE Transactions on Antennas and Propagation, Vol. 59, 288-293, Jan. 2011. Google Scholar

12. Huang, C. Y., J. Y. Wu, and K. L. Wong, "Cross slot coupled microstrip antenna and dielectric resonator antenna for circular polarization," IEEE Transactions on Antennas and Propagation, Vol. 47, 605-609, Apr. 1999.
doi:10.1109/8.768798 Google Scholar

13. Leung, K. W., W. C. Wong, and H. K. Ng, "Circularly polarized slot-coupled dielectric resonator antenna with a parasitic patch," IEEE Antennas Wireless Propagation Letters, Vol. 1, 57-59, Feb. 2002.
doi:10.1109/LAWP.2002.805124 Google Scholar

14. Sulaiman, M. I. and S. K. Khamas, "Singly-fed dielectric resonator antenna with a wideband circular polarization," Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP), 1950-1952, Department of Electronic and Electrical Engineering, University of Sheffield Mappin Stree, Sheffield, S1 3JD, UK, 2011. Google Scholar

15. Sulaiman, M. I. and S. K. Khamas, "A singly fed rectangular dielectric resonator antenna with a wideband circular polarization," IEEE Antennas Wireless Propagation Letters, Vol. 9, 615-618, 2010.
doi:10.1109/LAWP.2010.2054060 Google Scholar

16. Pozar, D. M., Microwave Engineering, 3rd Ed., 2004.

Dr. Lei Zhang

Dr. Yong-Chang Jiao

Professor Zibin Weng