Beam steered linear array of Cylindrical Dielectric Resonator Antenna

In the present work, linear array of four Cylindrical Dielectric Resonator Antenna having beam steering capability has been designed, investigated and validated experimentally. In order to achieve a specific progressive phase distribution, the phase coupled to each array element is controlled by changing the position of power junction feed point in the feeding network. Progressive phase shift between the elements have been achieved by the feeding network itself without the need of any phase shifter and biasing network hence making the array design simple and less costly. The proposed design with impedance bandwidth of 500 MHz at 7.5 GHz frequency along with the gain of nearly 10dBi could be used in radar communication and other wideband wireless applications operating in X-band for moving targets.