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International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 498176, 10 pages
http://dx.doi.org/10.1155/2013/498176
Research Article

Small Antenna Based on MEMS and Metamaterial Properties for Reconfigurable Applications

1Department of Electronics, Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), 72840 Puebla, PUE, Mexico
2Department of Electrical Engineering, University of South Florida, Tampa, FL 33620, USA

Received 22 June 2012; Revised 4 December 2012; Accepted 7 December 2012

Academic Editor: Francisco Falcone

Copyright © 2013 G. Rosas-Guevara 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 presents the design of a novel, small coplanar antenna using microelectromechanical systems (MEMS) and metamaterial (MTM) properties. The antenna is designed using coplanar waveguide (CPW) technology, presenting lower dielectric losses and higher signal integrity. The design method for this MEMS-MTM antenna, herein presented, is based on a composite right/left hand (CRLH) transmission Line (TL) using a mixed approach; considering the circuit model and full-wave simulations. The fabrication process is based on high-resistivity silicon wafers. The radiator has dimensions of × and a thickness of , whereas the complete circuit, of 5 mm × 11 mm, is equivalent to × . The antenna is designed using MEMS parallel-plate capacitors as the radiator, which also allows for the reconfiguration of the central frequency by electrostatically varying the capacitance. The results presented here correspond to a central frequency of 8.4 GHz. Due to its small size, this antenna has a wide variety of applications in wireless circuits for different fields.