Comments on "subwavelength focusing using a negative-refractive-index transmission line"

Comments on "subwavelength focusing using a negative-refractive-index transmission line"

I. CORRECTED THE RADIAL TL IMPEDANCE FORMULAS FOR THE TL MESH AND THE DUAL TL The above paper [1] analyzes 1) negative-refractive-index transmission-line lens; 2) subwavelength focusing. Unfortunately, there are some errors in the derivations of the radial TL impedance expressions for the TL mesh an...

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Veröffentlicht in:IEEE antennas and wireless propagation letters 2007, Vol.6, p.659-660
Hauptverfasser: Xu, Xinhe, Wen, Guangjun, Gan, Yuehong, Cao, Yunjian
Format: Artikel
Sprache:eng
Schlagworte:
Electromagnetic scattering
Equations
Gallium nitride
Impedance
Lenses
Negative refractive index
Propagation constant
radial impedance
Refractive index
transmission line
Transmission lines
Voltage
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Zusammenfassung:I. CORRECTED THE RADIAL TL IMPEDANCE FORMULAS FOR THE TL MESH AND THE DUAL TL The above paper [1] analyzes 1) negative-refractive-index transmission-line lens; 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.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2007.895921