A Compact Wide Band Implantable Antenna for Biotelemetry

In this paper, a miniaturized implantable antenna for the biotelemetry has been designed. The proposed antenna is operating at industrial, scientific, and medical (ISM) 2.45 GHz band. The miniaturization of the antenna is achieved by using a shorting pin (Via), circular slots in radiator, and open-ended rectangular and polygon-shaped slots in the ground. The dimensions of the designed antenna are (7×7×0.2)mm
³
. The Rogers ULTRALAM (tanδ = 0.0025, ε
r
= 2.9) is used as a dielectric material for superstrate and substrate. The proposed antenna is placed in the homogeneous skin phantom to measure the results. The gain and bandwidth of this single band implantable antenna are −15 dBi, and 420 MHz, respectively. The performance of the antenna is better than previous work.