Table of Contents
ISRN Electronics
Volume 2012, Article ID 780232, 29 pages
http://dx.doi.org/10.5402/2012/780232
Review Article

Metamaterials for Wireless Communications, Radiofrequency Identification, and Sensors

GEMMA/CIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain

Received 16 September 2012; Accepted 7 November 2012

Academic Editors: H.-T. Chen and W.-C. Liu

Copyright © 2012 Ferran Martín. 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 is focused on the application of concepts derived from metamaterials to the development of novel devices, circuits, and antennas of interest in wireless communications, radiofrequency identification (RFID), and sensors. Specifically, it is shown that artificial transmission lines based (or inspired) on metamaterials exhibit interesting properties, useful for the implementation of high-performance and compact devices as well as novel functional devices. Thanks to the presence of reactive loading elements in such artificial lines, the main line parameters, that is, the characteristic impedance and the phase constant, can be engineered. This has opened new paths for RF and microwave circuit and antenna design on the basis of impedance and dispersion engineering.