A Compact Size Capacitive Load Dual Band Planar Inverted-F Implant Antenna for Biomedical Services

Abstract In this work a compact size capacitive load dual band planar inverted-F implant antenna is presented. The suggested antenna is modeled on RO3010 substrate that has a thickness of 2 mm, dielectric constant of 10.2, and tangent loss of 0.0023 to operate at both the Medical Implant Communications Services (MICS) and Industrial, Scientific, and Medical (ISM) bands. A capacitive load is inserted between the patch and the ground plane to get a dual band and compact size implant antenna. The antenna size is 20× 12×2 mm3. The antenna designed in this work operates at 402MHz with a return loss of -23.23dB over a frequency band [397.15-409.4MHz] for MICS band and operates at 2.42GHz with a return loss of -20dB over a frequency band [2.37-3GHz] for ISM band. The simulated gain is -27.52dBi at 402MHz for MICS band and − 1.85dBi at 2.42GHz for ISM band. The proposed antenna has a good performance inside three-layered tissue model. The Computer Simulation Technologies (CST) Microwave studio is used to model and simulate the proposed antenna.