Dielectric Resonator Antenna With Low-cost Paddle-controlled Circuit for Flexible Beam Steering

In this paper, a dielectric resonator antenna (DRA) with paddle-controlled circuit is proposed for flexible beam steering. The dielectric resonator antenna is fed by a monopole and a patch for alternative modes. A sliding paddle is used to control the input phase between two modes to achieve the flexible beam steering over the horizontal plane. The steering beam is tilted to the z-axis with an angle of 45 degrees to achieve indoor coverage. Compared with the traditional beam switching antenna, the proposed DRA is low-cost by avoiding the switching circuit with discrete state. The DRA is fabricated and measured with its center frequency of 2.95 GHz, high gain (5dBi) and high efficiency (86.1%). The measured results are in good agreement with the simulation results and will be demonstrated in the conference. The proposed DRA can be applied to the indoor wireless systems with flexible beam Steering requirement.