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International Journal of Antennas and Propagation
Volume 2016 (2016), Article ID 7379624, 11 pages
http://dx.doi.org/10.1155/2016/7379624
Research Article

The RF Energy Harvesting Antennas Operating in Commercially Deployed Frequency Bands: A Comparative Study

Department of Radio Electronics, Brno University of Technology, 616 00 Brno, Czech Republic

Received 7 December 2015; Revised 3 March 2016; Accepted 10 March 2016

Academic Editor: Yvan Duroc

Copyright © 2016 M. Mrnka et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper deals with suitable antennas for energy harvesting, which is a growing research field due to the utilization of nowadays ubiquitous and abundant RF energy. Four types of basic antenna structures suitable for harvesting applications, namely, the patch antenna, slot antenna, modified inverted F antenna, and dielectric resonator antenna, are compared from the viewpoint of reflection coefficient, efficiency, radiation patterns, and dimensions. The frequencies of interest were chosen so that they cover several main wireless systems operating between 0.8 GHz and 2.6 GHz, that is, GSM, UMTS, and WiFi.