Frequency Reconfigurable Implant Antenna for MICS and ISM Band Applications

Frequency reconfigurable compact antenna is presented in this paper for biomedical implant applications. Switching between two frequency bands of Medical Implant Communications Services (402-405 MHz) and Industrial Scientific and Medical (902-928 MHz) bands are realized by using PIN diodes. The overall size of the antenna element is compact with dimensions of 15 × 12 × 0.635 mm. Two radiating element configuration of spiral and monopole are embedded in the top layer of substrate Rogers RT6010 for the radiations in the MICS and ISM frequency bands. The proposed antenna is analyzed and optimized in CST for various dimensions of spiral segments, monopole and coplanar waveguide ground plane. The frequency response for the two states of the proposed antenna along with radiation plots are presented for verification of the concept.