Title: Modified fractal rectangular curve dielectric resonator antenna terminated in a bio-medium

Authors: Ravi Kumar Gangwar; S.P. Singh; D. Kumar

Addresses: Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221005, India ' Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221005, India ' Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221005, India

Abstract: A modified fractal rectangular curve Dielectric Resonator Antenna (DRA) with a hole/holes has been proposed for 2.4 GHz WLAN band and its input and radiation characteristics compared with conventional FRC-1 DRA of same size through simulation studies using CST Microwave Studio software. The effects of the size, position and shape of hole/holes introduced in the fractal geometry on the characteristics of the antenna have also been studied. Furthermore, simulation results for absorbed power distribution in a homogeneous bio-medium (muscle layer) owing to the proposed fractal antenna with five holes of square cross-section for different antenna-to-bio-media separations are presented in terms of Specific Absorption Rate (SAR) distribution in the medium at the resonant frequency of the antenna.

Keywords: fractal rectangular curve DRA; dielectric resonator antenna; power loss density; SAR; specific absorption rate; radiation patterns; CST Microwave Studio; simulation; muscle layers; resonant frequency.

DOI: 10.1504/IJSISE.2014.057933

International Journal of Signal and Imaging Systems Engineering, 2014 Vol.7 No.1, pp.43 - 51

Received: 05 Feb 2011
Accepted: 26 Apr 2011
Published online: 24 Oct 2014 *

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