Performance Analysis of Pentagon Shaped Microstrip Antenna for Biomedical Applications

The patch antenna has been discovered to have a great impact on communication devices due to its versatility. The design of pentagon microstrip patch antenna (PMPA) with Roger RO4350 substrate to strengthen the antenna characteristics. Patch antenna contains the emanating patch on above the substrate and has a layer called ground on another side of the substrate. The choice of substrate materials helps to decide the antenna performance. The antenna efficiency is improved by opting for a suitable substrate material. The CST studio software helps to simulate the proposed models. The operating frequency used in the proposed antenna is 3 GHz. The pentagon-shaped patch antenna will produce better gain and minimum RL. The result parameters were calculated by two cases such as by changing the position of the feed and changing the radius of the holes drilled in the defected substrate. The best values of the return loss (RL) of the PMPA are - 38.075dB, 26.432dB, -25.432dB and the gain values are 4.73dB, 4.49dB, 3.13dB respectively. The proposed antenna is suitable for biomedical applications.