In this paper, a Rectangular Dielectric Resonator Antenna (RDRA) with a modified feeding line is designed and investigated at 28 GHz. The modified feed line is designed to excite the DR with relative permittivity of 10 which contributes to a wide bandwidth operation. The proposed single RDRA has been fabricated and mounted on a RT/Duroid 5880 (εr=2.2 and tan δ=0.0009) substrate. The optimized single element has been applied to array structure to improve the gain and achieve the required gain performance. The radiation pattern, impedance bandwidth and gain are simulated and measured accordingly. The number of elements and element spacing are studied for an optimum performance. The proposed antenna obtains a reflection coefficient response from 27.0 GHz to 29.1 GHz which cover the desired frequency band. This makes the proposed antenna achieve 2.1 GHz impedance bandwidth and gain of 12.1 dB. Thus, it has potential for millimeter wave and 5G applications.
2. Sulyman, A. I., et al., "Radio propagation path loss models for 5G cellular networks in the 28 GHz and 38 GHz millimeter-wave bands," IEEE Commun. Mag., 78-86, 2014.
3. Wong, H., K. B. Ng, C. H. Chan, and K. M. Luk, "Printed antennas for millimeter wave application," International Workshop on Antenna Tech., 411-414, 2013.
4. Chin, K. S., et al., "28-GHz patch antenna arrays with PCB and LTCC substrates," Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, Vol. 1, 355-358, 2011.
5. Tong, K. F., K. Li, and T. Matsui, "Performance of millimeter-wave coplanar patch antennas on low-k materials," PIERS Online, Vol. 1, No. 1, 46-47, 2005.
6. Wang, D., H. Wong, K. B. Ng, and C. H. Chan, "Wideband shorted higher-order mode millimeter- wave patch antenna," IEEE Antennas and Propagation Society International Symposium, 5-6, 2012.
7. Balanis, C. A., Antenna Theory: Analysis and Design, Wiley-Interscience, New Jersey, 2005.
8. Jamaluddin, M. H., et al., "A dielectric resonator antenna (DRA) re ecarray," Proc. European Microwave Conference, 25-28, 2009.
9. Shahadan, N. H., et al., "Investigation on feeding techniques for rectangular dielectric resonator antenna in higher-order mode for 5G applications," Applied Mechanics and Materials, Vol. 781, 2015.
10. Pan, Y. M., K. W. Leung, and K. M. Luk, "Design of the millimeter-wave rectangular dielectric resonator antenna using a higher-order mode," IEEE Trans. Antennas and Propag., Vol. 59, 2011.
11. Jamaluddin, M. H., et al., "Dielectric resonator antenna re ectarray in Ka-band," Antenna and Propagation Society International Symposium (APSURSI), 1-4, 2010.
12. Bijumon, P. V., A. P. Freundorfer, M. Sayer, and Y. M. M. Antar, "On-chip silicon integrated cylindrical dielectric resonator antenna for millimeter wave applications," Signals, Systems and Electronic International Symposium, 489-492, 2007.
13. Wang, K. X. and H. Wong, "A circularly polarized antenna by using rotated-stair dielectric resonator," IEEE Antennas and Wireless Propag Letters, Vol. 14, 787-790, 2015.
14. Petosa, A., Dielectric Resonator Antenna Handbook, Artech House, Norwood, MA, 2007.
15. Luk, K. M. and K. W. Leung (eds.), Dielectric Resonator Antennas, Research Studies Press, London, UK, 2003.
16. Petosa, A. and A. Ittipiboon, "Dielectric resonator antennas: A historical review and the current state of the art," IEEE Antennas and Propag. Mag., Vol. 52, 2010.
17. Costanzo, S., I. Venneri, G. Di Massa, and G. Amendola, "Hybrid array antenna for broadband millimeter-wave applications," Progress In Electromagnetics Research, 173-183, 2008.
18. Lai, Q. H., et al., "Comparison of the radiation efficiency for the dielectric resonator antenna and the microstrip antenna at Ka band," IEEE Trans. Antennas Propag., Vol. 56, No. 11, 3589-3592, 2008.
19. Mongia, R. K. and A. Ittipiboon, "Theoretical and experimental investigation on rectangular dielectric resonator antenna," IEEE Trans. Antennas Propag., Vol. 45, 1997.
20., , CST MICROWAVE STUDIO 2014, CST Computer Simulation Technology AG, 2015.
21. Maina, I., T. A. Rahman, and M. Khalily, "Bandwidth enhanced and sidelobes level reduced radial line slot array antenna at 28 GHz for 5G next generation mobile communication," ARPN Journal of Engin. Applied Sciences, Vol. 10, 2015.