<p>The impedance bandwidth of a high permittivity cylindrical dielectric resonator antenna excited by a microstrip line was significantly improved by modifying the feed geometry. The 10 dB return loss bandwidth is enhanced from 12 to 26% without much affecting the gain and other radiation properties of the antenna. Good agreement has been observed between the predicted and measured results.</p>
P. V. Bijumon, Dr. Sreedevi K Menon, Suma, M. N., Sebastian, M. T., and Mohanan, P., “Broadband cylindrical dielectric resonator antenna excited by modified microstrip line”, Electronics Letters, vol. 41, pp. 385–387, 2005.