Skip to main content
Article
Subwavelength, Compact, Resonant Patch Antennas Loaded With Metamaterials
Departmental Papers (ESE)
  • Andrea Alù, University of Pennsylvania
  • Filiberto Bilotti, University of Roma Tre
  • Nader Engheta, University of Pennsylvania
  • Lucio Vegni, University of Roma Tre
Document Type
Journal Article
Date of this Version
1-1-2007
Comments

Copyright 2007 IEEE. Reprinted from IEEE Transactions on Antennas and Propagation, Volume 55, Issue 1, January 2007, pages 13-25.

This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Abstract

We analyze the matching and radiation properties of subwavelength resonant patch antennas filled with double-negative, double-positive, and/or single-negative metamaterial blocks. Analyzing the theoretical limits inherently present when loading such common radiators with metamaterials, we show how these configurations may exhibit in principle an arbitrarily low resonant frequency for a fixed dimension, but they may not necessarily radiate efficiently when their size is electrically small. However, interesting possibilities are suggested to overcome these limitations by employing circular or more complex patch geometries in order to select specific modes that, when appropriate loading ratios between the filling materials are chosen, also ensure radiation performance comparable qualitatively with a regular patch radiator of standard dimensions. Realistic numerical simulations, considering material dispersion, losses and the presence of the antenna feed are presented, showing how a practical realization is foreseeable. This may open novel venues in the design of small-scaled radiators with enhanced performance, which is of interest for many applications.

Keywords
  • metamaterials,
  • miniaturized antennas,
  • patch antennas
Citation Information
Andrea Alù, Filiberto Bilotti, Nader Engheta and Lucio Vegni. "Subwavelength, Compact, Resonant Patch Antennas Loaded With Metamaterials" (2007)
Available at: http://works.bepress.com/nader_engheta/21/