DocumentCode
952436
Title
Comments on "subwavelength focusing using a negative-refractive-index transmission line"
Author
Xu, Xinhe ; Wen, Guangjun ; Gan, Yuehong ; Cao, Yunjian
Author_Institution
Univ. of Electron. Sci. & Technol. of China, Chengdu
Volume
6
fYear
2007
fDate
6/29/1905 12:00:00 AM
Firstpage
659
Lastpage
660
Abstract
The above paper (A. Grbic and G. V. Eleftheriades, "Subwavelength focusing using a negative-refractive-index transmission-line lens," IEEE Antennas Wireless Propagat. Lett., vol.2, p.186-189, 2003) analyzes (1) negative-refractive-index transmission-line lens and (2) subwavelength focusing. Unfortunately, there are some errors in the derivations of the radial TL impedance expressions for the TL mesh and the dual TL. Despite this, one should honor the achievements in the paper in which Grbic and Eleftheriades present simulations demonstrating subwavelength focusing of electromagnetic waves.
Keywords
refractive index; transmission line theory; electromagnetic waves; negative-refractive-index; radial transmission line impedance; subwavelength focusing; transmission line mesh; Electromagnetic scattering; Equations; Gallium nitride; Helium; Impedance; Lenses; Propagation constant; Refractive index; Transmission lines; Voltage; Negative refractive index; radial impedance; transmission line;
fLanguage
English
Journal_Title
Antennas and Wireless Propagation Letters, IEEE
Publisher
ieee
ISSN
1536-1225
Type
jour
DOI
10.1109/LAWP.2007.895921
Filename
4359915
Link To Document