Title :
Broadband thin flat lens at sub-THz frequencies
Author :
Savini, Giorgio ; Ade, P.R. ; Moseley, Paul ; Jin Zhang ; Saenz, Elena
Author_Institution :
Dept. of Phys. & Astron., Univ. Coll. London, London, UK
Abstract :
We recently showed (Savini 2012) the use of stacked graded photolithographic capacitive metal-mesh structures on polypropylene substrates to produce a thin flat Wood lens working in a wide (90%) bandwidth. Here an additional impedance-matched layer is designed to improve the original lens efficiency in a wide band around the central frequency of operation.
Keywords :
impedance matching; lenses; photolithography; polymers; broadband thin flat lens; central frequency; impedance-matched layer; lens efficiency; polypropylene substrates; stacked graded photolithographic capacitive metal-mesh structures; sub-THz frequencies; thin flat Wood lens; Coatings; Dielectrics; Frequency measurement; Indexes; Lenses; Materials; Optical filters; Artificially engineered materials; Far Infrared; Gradient-index lenses; Interference filters; Lenses;
Conference_Titel :
Millimeter Waves and THz Technology Workshop (UCMMT), 2013 6th UK, Europe, China
Conference_Location :
Rome, Italy
DOI :
10.1109/UCMMT.2013.6641510
