volume | PIER Journals

Abstract

A reconfigurable cylindrical dielectric resonator antenna with polarization diversity is proposed for S-band and C-band in this paper. An annular slot is used as the feeding aperture, which can not only excite two orthogonal modes (HEM^x_11δ and HEM^y_11δ) of the cylindrical dielectric resonator at 3.2 GHz, but also produce a 90˚ phase difference. Two switches, whose locations are carefully optimized, are used to control HEM^x_11δ being a phase-lagging or phase-leading component. Thus the antenna can achieve either left- or right-hand circular polarization (LHCP or RHCP) in S band, depending on the switch states. The higher order mode of HEM_21δ is also excited at 4.7 GHz for linear polarization (LP), regardless of the switch states. With the advantages of compact structure, simple biasing network and easy fabrication, this antenna can be widely applied to wireless communication systems, especially for polarization diversity applications.

1. Long, S., M. McAllister, and L. Shen, "The resonant cylindrical dielectric cavity antenna," IEEE Trans. Antennas Propag., Vol. 31, No. 3, 406-412, 1983.
doi:10.1109/TAP.1983.1143080 Google Scholar

2. Fan, Z. and Y. Antar, "Slot-coupled dr antenna for dual-frequency operation," IEEE Trans. Antennas Propag., Vol. 45, No. 2, 306-308, 1997.
doi:10.1109/8.560351 Google Scholar

3. Liu, H., Y. Liu, M. Wei, and S. Gong, "Dual-broadband dielectric resonator antenna based on modified sierpinski fractal geometry," Electron. Lett., Vol. 51, No. 11, 806-808, 2015.
doi:10.1049/el.2015.0302 Google Scholar

4. Altaf, A., J. Jung, Y. Yang, K. Lee, and K. C. Hwang, "Reconfigurable dual-/triple-band circularly polarized dielectric resonator antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 3, 443-447, 2020.
doi:10.1109/LAWP.2020.2970171 Google Scholar

5. Chen, H.-M., Y.-K. Wang, Y.-F. Lin, S.-C. Lin, and S.-C. Pan, "A compact dual-band dielectric resonator antenna using a parasitic slot," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 173-176, 2009.
doi:10.1109/LAWP.2008.2001119 Google Scholar

6. Guha, D., P. Gupta, and C. Kumar, "Dualband cylindrical dielectric resonator antenna employing HEM11δ and HEM12δ modes excited by new composite aperture," IEEE Trans. Antennas Propag., Vol. 63, No. 1, 433-438, 2015.
doi:10.1109/TAP.2014.2368116 Google Scholar

7. Sharma, A., G. Das, S. Gupta, and R. K. Gangwar, "Quad-band quad-sense circularly polarized dielectric resonator antenna for gps/cnss/wlan/wimax applications," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 3, 403-407, 2020.
doi:10.1109/LAWP.2020.2969743 Google Scholar

8. Fang, X., K. W. Leung, and E. H. Lim, "Singly-fed dual-band circularly polarized dielectric resonator antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 13, 995-998, 2014.
doi:10.1109/LAWP.2014.2324612 Google Scholar

9. Wang, K. X. and H. Wong, "A circularly polarized antenna by using rotated-stair dielectric resonator," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 787-790, 2015.
doi:10.1109/LAWP.2014.2385475 Google Scholar

10. Chowdhury, R. and R. K. Chaudhary, "An approach to generate circular polarization in a modified cylindrical-shaped dielectric resonator antenna using pmc boundary approximation," IEEE Antennas and Wireless Propagation Letters, Vol. 17, No. 9, 1727-1731, 2018.
doi:10.1109/LAWP.2018.2864819 Google Scholar

11. Motevasselian, A., A. Ellgardt, and B. Jonsson, "A helix excited circularly polarized hollow cylindrical dielectric resonator antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 535-538, 2013.
doi:10.1109/LAWP.2013.2257942 Google Scholar

12. Chair, R., S. S. Yang, A. Kishk, K. F. Lee, K. M. Luk, et al. "Aperture fed wideband circularly polarized rectangular stair shaped dielectric resonator antenna," IEEE Trans. Antennas Propag., Vol. 54, No. 4, 1350-1352, 2006.
doi:10.1109/TAP.2006.872665 Google Scholar

13. Wang, X., S. Tang, L. Yang, and J. Chen, "Differential-fed dual-polarized dielectric patch antenna with gain enhancement based on higher order modes," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 3, 502-506, 2020.
doi:10.1109/LAWP.2020.2964569 Google Scholar

14. Lim, E. H., K. W. Leung, and X. Fang, "The compact circularly-polarized hollow rectangular dielectric resonator antenna with an underlaid quadrature coupler," IEEE Trans. Antennas Propag., Vol. 59, No. 1, 288-293, 2011.
doi:10.1109/TAP.2010.2090454 Google Scholar

15. Zou, M., J. Pan, and Z. Nie, "A wideband circularly polarized rectangular dielectric resonator antenna excited by an archimedean spiral slot," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 446-449, 2015.
doi:10.1109/LAWP.2014.2364296 Google Scholar

16. Zhong, L., J. S. Hong, and H. C. Zhou, "A novel pattern-reconfigurable cylindrical dielectric resonator antenna with enhanced gain," IEEE Antennas and Wireless Propagation Letters, Vol. 15, 1253-1256, 2016.
doi:10.1109/LAWP.2015.2504127 Google Scholar

17. Guha, D., H. Gajera, and C. Kumar, "Cross-polarized radiation in a cylindrical dielectric resonator antenna: Identification of source, experimental proof, and its suppression," IEEE Trans. Antennas Propag., Vol. 63, No. 4, 1863-1867, 2015.
doi:10.1109/TAP.2015.2398127 Google Scholar

18. Luk, K. M. and K. W. Leung, Dielectric Resonator Antennas, Research Studies Press, Hertfordshire, U.K., 2003.

19. Garg, R., I. Bahl, and M. Bozzi, Microstrip Lines and Slotlines, Artech House, 2013.

Dr. Lei Zhong