DocumentCode :
2162462
Title :
Evanescent rectangular waveguide with corrugated walls: a composite right/left-handed metaguide
Author :
Eshrah, Islam A. ; Kishk, Ahmed A. ; Yakovlev, Alexander B. ; Glisson, Allen W.
Author_Institution :
Dept. of Electr. Eng., Mississippi Univ., USA
fYear :
2005
fDate :
12-17 June 2005
Abstract :
A negative-refractive-index guided-wave structure is realized using a rectangular waveguide with corrugated broad wall and operating in the evanescent region. In the equivalent transmission line model, the shunt inductance is inherent from the evanescence condition, where the waveguide equivalent circuit is an L-L circuit. The series capacitive impedance provided by the slots that constitute the corrugated wall dominates over the waveguide series inductance in a certain frequency range, resulting in the equivalent C-L transmission line circuit. Analysis of the structure using the equivalent transmission line model is presented showing the dispersion and scattering characteristics of the structure. Comparison between the equivalent circuit model and the full-wave finite-difference time-domain solution exhibits very good agreement.
Keywords :
dispersion (wave); electromagnetic wave propagation; electromagnetic wave scattering; equivalent circuits; finite difference time-domain analysis; rectangular waveguides; refractive index; transmission line theory; composite right-left-handed metaguide; corrugated broad wall waveguide; dispersion characteristics; equivalent C-L transmission line circuit; equivalent transmission line model; evanescent rectangular waveguides; full-wave finite-difference time-domain solution; left-hand propagation; negative-refractive-index guided-wave structure; scattering characteristics; series capacitive impedance; shunt inductance; waveguide equivalent circuit; waveguide series inductance; Circuit analysis; Distributed parameter circuits; Equivalent circuits; Finite difference methods; Frequency; Impedance; Inductance; Rectangular waveguides; Scattering; Time domain analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
ISSN :
01490-645X
Print_ISBN :
0-7803-8845-3
Type :
conf
DOI :
10.1109/MWSYM.2005.1517057
Filename :
1517057
Link To Document :
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