A compact multi-band dielectric resonator antenna loaded with CSRRs for communication systems

In this paper, a compact multi-band cylindrical dielectric resonator antenna (DRA) loaded with CSRR is presented. The DRA is composed of a semi-cylindrical dielectric resonator with metal ground sheet on the cut plane loaded with metamaterial structure. It is fed by aperture coupled microstrip line. The antenna size is about 50% decreased compared with the full cylindrical DRA. The SCRR is used to broaden bandwidth of the antenna. Simulation result shows that the antenna bandwidth can cover the 3G, 4G and WLAN usage. The antenna gain is above 5dB in its working band.