Design and Optimization of Compact RFID Antenna Tag for Biomedical Applications

A compact RFID antenna tag is designed and optimized for biomedical applications. The sensors provide a good rate of transfer of data along with a lengthy reading of range. However, tags of antenna will face distortion in frequency if come across metals and surfaces of liquids. We focused on those factors to enhance the range of observation in antenna and increase in number for smaller applications. The RFID antenna is meant for designs smaller in size and better efficiency connected with surfaces of metal applications. The simulations are carried out by Matlab antenna tool box and optimization toolbox. The results show the values of observation as 6-m and 4.4-m for 902 to 928 MHz and 840 to 845 MHz typical frequency bands, respectively. The proposed design has low profile, low cost, and long readable range with good conjugate matching and unidirectional radiation.