A Wide-Band and Wide-Beam 1-Bit Phase Reconfigurable Antenna

In this paper, a 1-bit phase reconfigurable antenna is presented for wide-band and wide-beam applications. The proposed antenna is composed of a radiator and a switchable feeding structure. We choose the aperture-coupled stacked patch as the radiator to broaden the operating bandwidth. Due to the structural symmetry, a stable phase difference of 180 degrees is achieved by switching the working state of the feeding part. In addition, a wide-angle matching layer and metallic walls are introduced in the antenna to widen the beamwidth of the radiation pattern. To verify our design, the proposed antenna is designed and simulated. The -10-dB impedance bandwidth ranges from 11 to 12.8 GHz. The half-power beamwidths (HPBWs) for the proposed antenna in E-plane and H-planes are 156 degrees and 151 degrees respectively.