Composite Right/Left-Handed Metamaterial Antennas

Abstract

The transmission line (TL) approach to composite right/left-handed (CRLH) metamaterials has led to various novel microwave devices [1]. In particular, the extraordinary properties of the CRLH metamaterial have been used to realize antennas not possible with conventional materials alone. The purpose of this paper is to review the CRLH metamaterial’s unique features which have been used to realize novel leaky-wave antennas, compact planar antennas, and infinite wavelength resonant antennas at the authors’ research laboratory.