A Compact Wideband Slotted Hexagonal Patch Antenna with a Modified Ground Structure for WiFi-5/6 Communication

Abstract

A compact wideband slotted hexagonal patch antenna (CWSHPA) with a modified ground plane structure for WiFi-5/6 communication has been designed and proposed in this paper. In the hexagonal patch antenna, a substrate material named Rogers RT5880 with a thickness of 0.79 mm is used. The modified ground plane structure has a good impact on the antenna size reduction as well as the performance improvement of the antenna. The optimized volume of the antenna is 34×20×0.79 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> (537.2mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ) which covers the frequency range of 5.1697 – 7.5388 GHz under the −10 dB scale. It also shows that the radiation efficiency ranges from 79.19% to 89.37% and the efficiency is 83.03% at 6. 33 GHz. The average radiation efficiency within the operating band is about 85%. The gain and the directivity are varying from 3.1 dB to 4.1 dB and 3.6 to 4.9 dBi. The proposed microstrip patch antenna exhibits a gain of 3.995 dB at centre frequency of 6.33 GHz which gives the Omni-directional radiation pattern as well as a competitor of WiFi-5/6 communication. The designed slotted hexagonal microstrip patch antenna (MPA) is simulated by using the CST microwave studio suite 2018.