NDLI: Low Cost and Broadband Dual-Polarization Metamaterial Lens for Directivity Enhancement

Content Provider	IEEE Xplore Digital Library
Author	Turpin, J.P. Qi Wu Werner, D.H. Martin, B. Bray, M. Lier, E.
Copyright Year	1963
Abstract	Metamaterials have been used in many different configurations to enhance the radiation properties of antennas. However, the vast majority of these metamaterial applications only consider linearly polarized antennas. This paper discusses the theory, design, implementation, and measurements of a far-field collimating lens for use with a circularly-polarized crossed-dipole antenna constructed from a 3D-volumetric metamaterial slab. Zero-index materials (ZIM) and low-index materials (LIM) cause the magnitude and phase of the radiated field across the face of the lens to be distributed uniformly, increasing the broadside gain over the feed antenna alone. Full-wave simulations were used in design of the lens, and a prototype metamaterial lens (meta-lens) was constructed and measured to verify the theoretical predictions. The meta-lens was found to increase the measured directivity of a crossed-dipole feed antenna by more than 6 dB, in good agreement with numerical simulations.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	5717
Ending Page	5726
Page Count	10
File Size	1917190
File Format	PDF
ISSN	0018926X
Volume Number	60
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Metamaterials Lenses Magnetic materials Permittivity Permeability Antenna measurements split-ring resonators Antennas metamaterials microwave lenses
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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