A High Gain and Low Cross-Polarization Compact Slotted Patch Antenna for 5G Wireless Communication Applications

Using a slotted feed line and proximity coupled feeding method, a lightweight slotted rectangular microstrip patch antenna with high gain and minimal cross-polarization properties for 5G wireless applications is proposed. The proposed model operates in sub-6GHz band with frequency span of 3.5GHz, whereas the exhibits bandwidth is 206 MHz. A compact slotted patch size with 32×25.7 mm
²
is etching on the top layer of low permittivity PCB board whereas full ground is applied on the back side of the second layer. Besides, a series of rectangular slots are applied in the middle layer to increase the impedance bandwidth, gain, efficiency, and decrease reflection coefficient. The overall dimensions are 43.36×35×1.575 mm
³
. Moreover, the overall performance is improved by using above mentioned slotted strip, such as the radiation efficiency with 83% as well as the gain increased up to 6.58 dBi. The reflection coefficient (S11) of this antenna configuration is -28.774 dB, respectively, with a -70.6 dBi of low cross-polarization.