NDLI: Sommerfeld Integral Path for Layered Double Negative Metamaterials

Content Provider	IEEE Xplore Digital Library
Author	Weiwei Shu Jiming Song
Copyright Year	1963
Abstract	A new Sommerfeld integral path is proposed for a dielectric slab with double negative metamaterials. In order to conceive the proper Sommerfeld integral path, the mode properties of a grounded dielectric slab with double negative metamaterials are first reviewed. Dispersion diagrams and power flows are investigated, followed by a summary of sign choices for possible solutions. The mode loci in the k_ρ-plane is studied, as it provides crucial information in proposing a proper Sommerfeld integral path. It is found that layered double negative materials have a different Sommerfeld integral path as compared to the conventional layered double positive media. The numerical difficulties associated with the Sommerfeld integral path are investigated, and an accelerating method that greatly speeds up convergence is suggested by properly transforming the integral domain from k_ρ-plane to k_z-plane. Finally, several numerical examples are provided to demonstrate the importance of choosing correct integral paths and to unveil the exotic properties and potential applications of double negative metamaterials.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	1496
Ending Page	1504
Page Count	9
File Size	1391111
File Format	PDF
ISSN	0018926X
Volume Number	60
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface waves Media Dielectrics Slabs Dispersion Magnetic materials Sommerfeld integral Complex surface wave mode convergence double negative metamaterials grounded dielectric slab horizontal electric dipole horizontal magnetic dipole left-hand material negative index material numerical integration radiation pattern
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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