dielectric resonator antanneDIELECTRIC RESONATOR ANTENNA - POSSIBLE CANDIDATE FOR ADAPTIVE ANTENNA ARRAYS Darko Kajfez and Ahmed A. Kishk University of Mississippi, USA ABSTRACT Future base stations for Spatial Division Multiplex Access (SDMA) will utilize adaptive antenna arrays, capable of identifying the direction of the incoming signal and steering the transmitted beam in appropriate directions. The radiating elements that have been thus far considered for building the antenna array are typically wire dipoles or microstrip patches. This tutorial paper describes a new type of radiating element, the dielectric-resonator (DR) antenna, that has some interesting characteristics, like the small size, high radiation efficiency and increased bandwidth. Historically, dielectric resonators have been used as circuit element……