A Self-Affine Fractal Antenna for Wireless Telemedicine Applications

A Self-Affine fractal antenna using multifractal concept is proposed. Space-filling cantors and self-similarity properties of fractal geometry have been adopted in the proposed antenna to reduce its size. The antenna, so designed to operate at MICS band (Medical Implant communication Service) for wireless telemedicine application. The prototype antenna exhibits wideband characteristics and provides a good agreement of returnloss(S11). Experimental returnloss has been compared with that obtained using method of moments. The objective of using self-affinity concept in antenna design makes it flexible in terms of controlling the resonance and bandwidth.

I. Introduction

The tremendous growth of wireless systems and the demand in wireless telemedicine applications in health care and patient monitoring systems increases day by day. In-order to monitor patients at remote area and to provide better healthcare by transmitting physiological and pathology parameters through wireless by incorporating fractal antennas on wireless boards. These planar antennas tend to occupy less space. The MICS (Medical Implant Communication Service) band has been allocated for 400–405MHz for medical and metrological applications and 2400MHz ISM (Indian Scientific and Medical band especially for biomedical applications. The self similarity property of fractal geometry and a number of new antenna designs have been reported in the literature.