Design of a circularly polarized dielectric resonator antenna

Since the 1970s, new technologies, such as printed circuit and microstrip patch antennas, have provided a starting point for research on lower cost and smaller size high frequency antennas. Microstrip patch antennas have some major disadvantages, such as a relatively narrow bandwidth and due to conductor losses, a limited use for frequencies greater than 30 GHz. The dielectric resonator antenna (DRA) is a new technology that can eliminate these drawbacks. Modern satellite and communication systems have brought the need for small inexpensive and broadband circularly polarized antennas that can transmit and receive signals from all orientations. This paper investigates and reports on the results of a circularly polarized dielectric resonator antenna (CPDRA) element and array