High-gain subwavelength resonant cavity antennas based on metamaterial ground planes
- 1 January 2006
- journal article
- Published by Institution of Engineering and Technology (IET) in IEE Proceedings - Microwaves, Antennas and Propagation
- Vol. 153 (1), 1-6
- https://doi.org/10.1049/ip-map:20050090
Abstract
Planar metamaterial surfaces with negative reflection phase values are proposed as ground planes in a high-gain resonant cavity antenna configuration. The antenna is formed by the metamaterial ground plane (MGP) and a superimposed metallodielectric electromagnetic band gap (MEBG) array that acts as a partially reflective surface (PRS). A single dipole positioned between the PRS and the ground is utilised as the excitation. Ray analysis is employed to describe the functioning of the antennas and to qualitatively predict the effect of the MGP on the antenna performance. By employing MGPs with negative reflection phase values, the planar antenna profile is reduced to subwavelength values (less than λ/6) whilst maintaining high directivity. Full-wave simulations have been carried out with commercially available software (Microstripes™). The effect of the finite PRS size on the antenna radiation performance (directivity and sidelobe level) is studied. A prototype has been fabricated and tested experimentally in order to validate the predictions.Keywords
This publication has 9 references indexed in Scilit:
- Special Issue on Artificial Magnetic Conductors, Soft/Hard Surfaces, and Other Complex SurfacesIEEE Transactions on Antennas and Propagation, 2005
- Artificial magnetic conductor surfaces and their application to low-profile high-gain planar antennasIEEE Transactions on Antennas and Propagation, 2005
- Low-profile resonant cavity antenna with artificial magnetic conductor ground planeElectronics Letters, 2004
- Artificial magnetic conductors for low-profile resonant cavity antennasPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- A metamaterial surface for compact cavity resonatorsIEEE Antennas and Wireless Propagation Letters, 2004
- Electromagnetic bandgap antennas and components for microwave and (sub)millimeter wave applicationsIEEE Transactions on Antennas and Propagation, 2003
- An idea for thin subwavelength cavity resonators using metamaterials with negative permittivity and permeabilityIEEE Antennas and Wireless Propagation Letters, 2002
- High gain planar antenna using optimised partially reflective surfacesIEE Proceedings - Microwaves, Antennas and Propagation, 2001
- Leaky-wave multiple dichroic beam formersElectronics Letters, 1989