A Novel Compact Wearable Microstrip Patch Antenna for Medical Applications

The modeling, design, fabrication, and analysis of a novel compact microstrip patch antenna in the Industrial, Scientific, and Medical (ISM) frequency range (2.4-2.5 GHz) are presented. Simulations were performed to investigate the performance of the structure using high frequency structure simulator (ANSYS HFSS) and Advanced Design System (ADS). The antenna is printed on Rogers RT/Duroid 5880 substrate and measurements were carried out using a vector network analyzer (VNA) and anechoic chamber. The simulated and measured return loss, gain, bandwidth, radiation pattern, and voltage standing wave ratio (VSWR) were obtained and compared with conventional designs. In addition, the specific absorption rate (SAR) is simulated at different positions to measure the level of electromagnetic waves absorbed by the human head model. The 60 x 60 mm, high gain, low specific absorption rate antenna is expected to contribute to the future development of new detection ways for various diseases.