Dielectric resonator antenna, a candidate for radar applications

Dielectric resonator antennas (DRA) are newly developed antennas that are wideband, small size and have high radiation efficiency. An overview of the DRA is presented to show some of their characteristics, such as geometry, matching bandwidth, radiation patterns, etc. Radiation patterns for some arrays are presented for a linearly polarized linear phased array. The circularly polarized DRA in the array environment is discussed. Advantages of using DRA in the radar system are highlighted indicating that the DRA is an appropriate candidate for radar applications mainly because of high efficiency and wideband performance.