A Planar Differential Filtering Dual-Patch Antenna with Slots for 5G Millimeter-Wave

Abstract

In this paper, a planar differential dual-patch antenna is proposed to achieve filtering response by radiation nulls from two pairs of slots on each patch. The radiation nulls can be controlled by the length of the slots because the resonant slots suppress the polarization component of electric field. The bandwidth can be controlled by the positions of the radiation nulls. An example of the proposed antenna is designed and simulated, which exhibits the 10-dB bandwidth of 10.64%, the maximum gain of 6.6 dBi and the cross-polarization level of 43.9 dB.