A Continuously Tunable Pattern Reconfigurable Dielectric Resonator Antenna for IEEE 802.11ac Applications

In this paper, a reconfigurable Dielectric Resonator Antenna (DRA) is proposed with continuously tunable radiation pattern for IEEE 802.11ac. A wideband variable concentric phase shifter was designed with continuously output phase shift over a wide impedance bandwidth on 5–6 GHz. This phase shifter is then integrated to a pattern reconfigurable DRA. And a continuously tuning between cardioid to directional radiation patterns is obtained over the operating band. The proposed mechanism gives a cost-effective solution to enable overage reconfigurable service for the IEEE 802.11ac applications.