Transmission, Magnification and Demagnification of Microwave Near-Field Distributions by Tapered Arrays of Wires
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 4Language: englishTyp: PDF
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Authors:
Dubrovka, Rostislav; Belov, Pavel A.; Palikaras, George; Zhao, Yan (Dept. Electronic Engineering, Queen Mary University of London, Mile End Road, E1 4NS, London, UK)
Simovski, Constantin R. (Radio Lab., Helsinki University of Technology, P.O. Box 3000, 02015 TKK, Finland)
Abstract:
The possibility to use tapered arrays of wires as devices capable of transmission, magnification and demagnification of microwave images with subwavelength resolution is discussed. Three fold magnification, three fold demagnification and transmission of an image with λ/30 resolution over a distance 3.5 times greater than the wavelength is demonstrated experimentally. The device is capable of transmitting images from one planar interface to another one in contrary to the hyperlens geometries operating with spherical or cylindrical interfaces. The proposed geometry suffers from limitation on the transverse size of the device. This limitation can be overcame by embedding a dielectric phase compensator inside of the array. The experiment confirms reliable performance of the proposed solution.