Circularly Polarize Antenna Array for mm-wave 5G Communications

In this work a simple structured, low profile circularly polarized (CP) antenna and CP array design for fifth-generation (5G) millimeter wave (MWW) communication systems is presented. The presented antenna is a rectangular patch antenna resonating at 38 GHz. The proposed antenna is fed by coax feed line. The circular polarization is achieved by truncating the corners of the antenna. A rectangular slanted slot is inserted at the center of the patch antenna to enhance the vertical components of E-field; consequently the axial ratio of the proposed structure is enhanced. The maximum gain yield by presented patch antenna is 6.84dBi. The Antenna Array compromises two corners truncated and slotted rectangular patches printed on Roger RT Duroid 5880. Consequently the gain was enhanced. The impedance bandwidth of the proposed design is from 36.4 GHz to 38.5 GHz, and axial radio is from 37 GHz to 38.2 GHz with a maximum gain of 9.8 dBi. The simulations to validate the proposed antenna design were conducted using Computer Simulation Technology (CST) tools.