A Miniaturized Wide Band Implantable Antenna for Biomedical Application

Abstract

In this paper, a miniaturized high gain antenna was designed for biomedical applications. The designed antenna operates on the industrial, medical, and scientific (2.40 – 2.4835) GHz band. The proposed antenna consists of the radiating element having rectangular, and circular slots, and a ground plane with rectangular slots. The total volume of the designed antenna is $(7\times 7\times 0.2)mm^{3}$, and the thickness of the superstrate and substrate is 0.1 mm. The Rogers ULTRALAM $(\varepsilon_{r}=2.9, \tan\delta=0.0025)$ material is used for substrate and superstrate. The proposed antenna is placed inside the different phantoms of the human body. The maximum gain achieved by the simulations of the proposed antenna is −12 dBi at 2.45 GHz. The designed antenna has better results than the antennas discussed in the literature in term of size, gain, and bandwidth.