Title: CPW-fed compact UWB spiral antenna for multiband applications

Authors: Saira Joseph; Binu Paul; Mridula Shanta; Mohanan Pezholil

Addresses: ECE Department, SCMS School of Engineering and Technology, Vidya Nagar, Palissery, Karukutty-683582, Cochin, Kerala, India ' Division of Electronics, School of Engineering, Cochin University of Science and Technology, Kalamassery-682022, Cochin, Kerala, India ' Division of Electronics, School of Engineering, Cochin University of Science and Technology, Kalamassery-682022, Cochin, Kerala, India ' Department of Electronics, Cochin University of Science and Technology, Kalamassery-682022, Cochin, Kerala, India

Abstract: A CPW-fed compact planar spiral antenna is presented. Different sections of the spiral monopole can excite multi resonant modes which makes the antenna suitable for multiband applications. The spiral is designed for dual band operation in GSM 1800 and UWB band. By using shorting strips between the arms of the spiral monopole, the frequency of the first operating band is lowered to WMTS band without change in overall antenna size. The antenna prototype is fabricated and tested. Simulated and measured readings are in good agreement. Radiation patterns are stable in all the intended bands of operation and group delay is nearly constant in the UWB range.

Keywords: coplanar waveguide; CPW; spiral antennas; global system for mobile; GSM; wireless medical telemetry services; WMTS; ultra wideband; UWB antennas; multiband applications; simulation; healthcare technology; medical services.

DOI: 10.1504/IJUWBCS.2015.077111

International Journal of Ultra Wideband Communications and Systems, 2015 Vol.3 No.2, pp.85 - 93

Received: 30 May 2015
Accepted: 29 Jul 2015

Published online: 21 Jun 2016 *

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