Design of Microstrip Patch Antenna with a Circular Shaped ISM Band Applications

This research study presents a proposed circular microstrip patch antenna design for ISM band applications. It features a compact and simple design with overall dimensions of 70x70x3.6mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup>. In the ISM (Manufacturing, Scientific, and Medical) band, specifically at 5.8 GHz, the design and evaluation of a circle-shaped microstrip antenna for wearable devices are the main emphasis of this study. The circular shape of the antenna contributes to its ability to support various polarization modes, thereby improving the diversity and robustness of the wireless signal. The ANSOFT High-voltage structure simulators (HFSS) were utilized for the analysis and the recorded return loss equals -25.00 dB at 5.8 GHz. The substrate used in the antenna is made of FR4 epoxy.