By Topic

Modal analysis of one-dimensional Electromagnetic Metamaterial grounded slab

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Boksiner, J. ; Space & Terrestrial Commun. Directorate, US Army RDECOM CERDEC, Fort Monmouth, NJ ; Minko, G.

Electromagnetic Metamaterials (MTMs) are artificial materials with novel electromagnetic properties not available in nature. MTMs have the potential to facilitate significant improvement on performance of low-profile (i.e. microstrip) and conformal antennas, including reduction of antenna size and antenna coupling. In this paper, we develop analytic expressions and corresponding tractable approximations for impedance and dispersion relations for one-dimensional MTMs applicable to a wide frequency range. Our technique obtains properties relevant for the application of MTMs to antennas without the need to derive the effective medium parameters first. We apply this technique to investigate surface wave modes supported by a single-layer and double-layer one-dimensional electromagnetic crystal on a ground plane. We use modal analysis for one-dimensional stratified periodic MTM media. The modal formalism is directly applicable to the surface wave problem and bypasses difficulties associated with defining average constitutive parameters that are valid only in the quasi-static region. We use transmission-line theory to solve the propagation problem in one direction, while modal functions are determined for the transverse plane. The stratified material is decomposed into unit cells. We apply Floquet's theorem and the chain matrix method to determine the characteristic impedance and the dispersion relation. We develop algebraic approximations to trigonometric functions in order to obtain approximate expressions in various frequency regimes. These approximations can be used to determine reactive impedance (stopgap) regions, surface-wave modes Greens functions (Antenna patterns), and resonance conditions for microstrip and conformal antennas. We apply this technique to the open slab configuration using transverse resonance. This work is an initial stage in CERDEC's effort to develop an approach to tailor MTM properties to meet military application-driven antenna requirements.

Published in:

Military Communications Conference, 2008. MILCOM 2008. IEEE

Date of Conference:

16-19 Nov. 2008