Comparative Analysis of the Different Substrate Materials for Achieving Biocompatibility in the Rectangular Stripped Microstrip Patch Antenna

An implant antenna is useful for transferring the internal body part data to the external world. Smart implantable device uses are increasing for monitoring and diagnosing the event. Implanting the antenna in the human body is a very challenging task due to the lossy behavior of the human and permanent insertion in the body. Biocompatibility of the Antenna is achieved in the form of miniaturization, radiation pattern, and return loss of the device. This study focuses on the comparative analysis of different biomedical materials such as Kapton polyimide (ɛr = 3.4, tan δ = 0.002), Macor (ɛr = 6.1, tan δ = 0.001), Rogers 3010 (ɛr = 11.2, tan δ = 0.66), Silicon (ɛr = 3.1, tan δ = 0.0025) and Teflon (ɛr = 2.1, tan δ = 0.001). All described material is connected as a substrate layer for simulated design. The simulated design of the antenna is too compatible for penetration in the body due to its small size and substrate material. The last section of the paper discussed the comparative analysis of all the biomedical materials with respect to their radiation pattern, directivity, VSWR, electric field, magnetic field, power loss, gain, and bandwidth. The result of all the parameters shows that the Kapton Polyimide is the better choice in comparison to others and shows better performance for the biomedical antenna design.