Wideband cylindrical dielectric resonator antenna fed-in using anti-probes providing directional patterns with low cross-polarization

The paper presents the investigation results on the cylindrical DRA excited using single probe and anti-probe feeds, both on a finite ground plane. For the single probe case, an impedance bandwidth of 82% is achieved with the monopole like radiation patterns in the beginning of the bandwidth and the directional radiation patterns later on. Compared to this, there is reduction in the bandwidth to 68% with the anti-probe method of feeding the DRA, however there is significant improvement in terms of the radiation pattern gain and low cross polarization, right from the start to the end of the frequency band.