Compact Gap-coupled Multi-Slotted Patch Antenna for Sub-6 GHz Communications

In this paper a compact wideband patch antenna with two L-shaped and two Z-shaped parasitic elements is presented for sub-6 GHz 5G communications. The radiating patch and the parasitic patches have been coupled using gap coupling technique. The slots are etched out from the main patch and parasitic patches to improve the bandwidth and impedance matching. Simulated and the measured results demonstrate that the antenna has a wider bandwidth of 310 MHz (3.3075-3.6125 GHz) with VSWR < 2 and unidirectional radiation pattern. The proposed antenna exhibits a unidirectional radiation pattern with the stabilized gain over the band of frequencies with 4.0033 dB. This antenna is potentially attractive for future mobile communication applications due to its unidirectional radiation pattern and compactness of 49.27%.