volume | PIER Journals

Abstract

Concentric circular slots coupled hemispherical dielectric resonator antenna fed by a modified microstrip line for circular polarization is investigated. By adjusting the position of the hemispherical dielectric resonator antenna and the slot properly, the resonance of the slot and the antenna is merged to obtain wider axial ratio bandwidth. Parametric studies have been done on the effect of changing the DRA position on impedance band and axial ratio band. The circular polarization achieved by the antenna offers a very good 10 dB impedance bandwidth of 27.379% and a 3 dB axial ratio bandwidth of 640 MHz. The maximum gain in the operational band is 7.3 dBi. The antenna is suitable for Wi-Max applications.

1. Luk, K. M. and K. W. Leung, Dielectric Resonator Antennas, Research Studies, Press Ltd., Hertfordshire, England, UK, 2003.

2. Iwasaki, H., "A circularly polarized small-size microstrip antenna with a cross slot," IEEE Transactions on Antennas and Propagation, Vol. 44, No. 10, 1399-1401, 1996.

3. Abdulla, P., A. B. Kakade, Y. K. Singh, and A. Chakrabarty, "Analysis of dielectric resonator antenna excited by a slot at the waveguide shorted end," Microwave and Optical Technology Letters, Vol. 50, No. 5, 1356-1359, 2008.

4. Kumar, R., S. R. Thummaluru, and R. K. Chaudhary, "Improvements in Wi-MAX reception: A new dual-mode wideband circularly polarized dielectric resonator antenna," IEEE Antennas and Propagation Magazine, Vol. 61, No. 1, 41-49, 2019.

5. Yang, W.-W., W.-J. Sun, H. Tang, and J.-X. Chen, "Design of a circularly polarized dielectric resonator antenna with wide bandwidth and low axial ratio values," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 3, 1963-1968, 2019.

6. Altaf, A. and M. Seo, "Dual-band circularly polarized dielectric resonator antenna for WLAN and WiMAX applications," Sensors, Vol. 20, No. 4, 1137, 2020.

7. Haneishi, M. and H. Takazawa, "Broadband circularly polarized planar array composed of a pair of dielectric resonator antennas," Electronics Letters, Vol. 21, No. 10, 437-438, 1985.

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.

9. Oliver, M. B., Y. M. M. Antar, R. K. Mongia, and A. Ittipiboon, "Circularly polarised rectangular dielectric resonator antenna," Electronics Letters, Vol. 31, No. 6, 418-419, 1995.

10. Esselle, K. P., "Circularly polarised higher-order rectangular dielectric-resonator antenna," Electronics Letters, Vol. 32, No. 3, 150-151, 1996.

11. Ain, M. F., Y. M. A. Qasaymeh, Z. A. Ahmad, M. A. Zakariya, M. A. Othman, S. S. Olokede, and M. Z. Abdullah, "Novel modeling and design of circularly polarized dielectric resonator antenna array," Progress In Electromagnetics Research C, Vol. 28, 165-179, 2012.

12. Rana, B. and S. K. Parui, "High gain circularly-polarized dielectric resonator antenna array with helical exciter," Progress In Electromagnetics Research Letters, Vol. 44, 107-111, 2014.

13. Malekabadi, A., M. H. Neshati, and J. Rashed-Mohassel, "Circular polarized dielectric resonator antennas using a single probe feed," Progress In Electromagnetics Research C, Vol. 3, 81-94, 2008.

14. Parvathy, A. R., V. G. Ajay, and M. Thomaskutty, "Circularly polarized split ring resonator loaded slot antenna," Advanced Electromagnetics, Vol. 7, No. 5, 1-6, 2018.

15. Zainud-Deen, S. H., H. A. Malhat, N. A. El-Shalaby, and K. H. Awadalla, "Dielectric resonator antenna mounted on cylindrical ground plane for handheld RFID reader at 5.8 GHz," Advanced Electromagnetics, Vol. 1, No. 3, 1-6, 2018.

16. Fang, X. S. and K. W. Leung, "Linear-/circular-polarization designs of dual-/wide-band cylindrical dielectric resonator antennas," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 6, 2662-2671, 2012.

17. Chair, R., S. L. S. Yang, A. A. Kishk, K. F. Lee, and K. M. Luk, "Aperture fed wideband circularly polarized rectangular stair shaped dielectric resonator antenna," IEEE Transactions on Antennas and Propagation, Vol. 54, No. 4, 1350-1352, 2006.

18. Mukherjee, B., P. Patel, G. S. Reddy, and J. Mukherjee, "A novel half hemispherical dielectric resonator antenna with array of slots for wideband applications," Progress In Electromagnetics Research C, Vol. 36, 207-221, 2013.

19. Muhammed, J. P., A. Parambil, and R. P. Muhammad, "Analysis and experiment of stair-shaped waveguide-fed dielectric resonator antenna," IET Microwaves, Antennas & Propagation, Vol. 10, No. 4, 453-458, 2016.

20. Kumar, R. and R. K. Chaudhary, "Modified microstrip-line-fed rectangular dielectric resonator antenna coupled with slotted ground plane for wideband circular polarization," Microwave and Optical Technology Letters, Vol. 58, No. 1, 206-210, 2016.

21. Pan, Y. M., K. W. Leung, and K. Lu, "Omnidirectional linearly and circularly polarized rectangular dielectric resonator antennas," IEEE Transactions on Antennas and Propagation, Vol. 60, No. 2, 751-759, 2011.

22. Tam, M. T. K. and R. D. Murch, "Circularly polarized circular sector dielectric resonator antenna," IEEE Transactions on Antennas and Propagation, Vol. 48, No. 1, 126-128, 2000.

23. Zhang, Z., X.-M. Wang, Y.-C. Jiao, and Z.-B. Weng, "Broadband circularly polarized dielectric resonator antenna with annular slot excitation," Progress In Electromagnetics Research C, Vol. 40, 105-117, 2013.

24. Mishra, N. K., S. Das, and D. K. Vishwakarma, "Low-profile circularly polarized cylindrical dielectric resonator antenna coupled by L-shaped resonating slot," Microwave and Optical Technology Letters, Vol. 59, No. 5, 996-1000, 2017.

25. Leung, K. W. and H. K. Ng, "The slot-coupled hemispherical dielectric resonator antenna with a parasitic patch: Applications to the circularly polarized antenna and wide-band antenna," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 5, 1762-1769, 2005.

Dr. Arunodayam Anu

Dr. Parambil Abdulla

Dr. Puthenveetil Muhammed Jasmine

Dr. Thulaseedharan Rekha