Dielectric hemisphere on cone antenna excited in the unsymmetric hybrid mode at microwave frequencies

Approximate expressions for the radiation field and the gain of the dielectric hemisphere on cone antenna excited in the un-symmetric hybrid mode have been derived. The radiation pattern and gain of a number of antennas of different dimensions have been calculated and measured aver a band of frequencies from 8.5 GHz to 11.0 GHz. rhe input impedance of these antennas measured over Ihis range of frequencies is also reported.