Skip to main content Accessibility help

Tradeoffs in the feed point selection of a cylindrical dielectric resonator antenna

  • Anuj Kumar Ojha (a1) and A. V. Praveen Kumar (a1)


This paper aims at investigating the dependence of the impedance and the radiation characteristics of a cylindrical dielectric resonator antenna (DRA), on the feed point of the DRA. It is demonstrated that the resonant frequency, bandwidth, radiation pattern symmetry, and cross-polarized radiation levels depend highly on the feed point. Three standard single-ended feed mechanisms such as the microstrip line, the microstrip slot, and the coaxial probe are taken as examples, to demonstrate the feed-point dependence of the DRA performance. Standard commercial EM simulation tools (ANSYS HFSS and CST Microwave Studio) are used for generating insightful results to help the discussion. This analysis also provides a functional comparison among the above said three feed mechanisms with respect to the feed-point dependence, which is further verified through measurements of DRA prototypes employing the three feeds.


Corresponding author

Author for correspondence: Anuj Kumar Ojha, E-mail:


Hide All
1.Long, SA, Mcallister, MW and Shen, LC (1983) The resonant cylindrical dielectric cavity antenna. IEEE Transactions on Antennas and Propagation 31, 406412.
2.Petosa, A and Ittipiboon, A (2010) Dielectric resonator antennas: a historical review and the current state of the art. IEEE Antennas Propagation Magazine 52, 91116.
3.Drossos, G, Wu, Z and Davis, LE (1997) A comparative study of circular microstrip and cylindrical dielectric resonator antennas. 10th International Conference on Antennas and Propagation, pp. 1417.
4.Lai, QH, Almpanis, G, Fumeaux, C, Benedickter, H and Vahldieck, R (2008) Comparison of the radiation efficiency for the dielectric resonator antenna and the microstrip antenna at Ka band. IEEE Transactions on Antennas and Propagation 56, 35893592.
5.Guha, D and Kumar, C (2016) Microstrip patch versus dielectric resonator antenna bearing all commonly used feeds: an experimental study to choose right element. IEEE Antennas Propagation Magazine 58, 4555.
6.Tang, H, Chen, J-X, Zhan, Y, Yang, W-W, Zhou, L-H and Li, W (2017) Differential dual-band dual-polarized dielectric resonator antenna. IEEE Transactions on Antennas and Propagation 65, 855860.
7.Li, B and Leung, KW (2008) On the differentially fed rectangular dielectric resonator antenna. IEEE Transactions on Antennas and Propagation 56, 353359.
8.Mongia, RK and Bhartia, P (1994) Dielectric resonator antennas – a review and general design relations for resonant frequency and bandwidth. International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering 4, 230247.
9.Rashidian, A, Tayfeh Aligodarz, M, Shafai, L and Klymyshyn, DM (2013) On the matching of microstrip-fed dielectric resonator antennas. IEEE Transactions on Antennas and Propagation 61, 52915296.
10.Kranenburg, RA and Long, SA (1988) Microstrip transmission line excitation of dielectric resonator antennas. Electronics Letters 24, 11561157.
11.Kishk, AA, Ittipiboon, A, Antar, YMM and Cuhaci, M (1995) Slot excitation of the dielectric disk radiator. IEEE Transactions on Antennas and Propagation 43, 198201.
12.Sabouni, A and Kishk, AA (2013) Dual-polarized, broadside, thin dielectric resonator antenna for microwave imaging. IEEE Antennas and Wireless Propagation Letters 12, 380383.



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed