CST – Computer Simulation Technology

Sub-wavelength Microwave Imaging by a Slab of Wire Medium
Pavel A. Belov, Yang Hao, Sunil Sudhakaran
Proceedings of the 36th European Microwave Conference
Sept. 2006
A device capable to transmit images with subwavelength resolution is proposed in this paper. The structure is formed by an array of parallel conducting wires (wire medium) and effectively operates as a telegraph which captures a distribution of the electric field at the front interface and transmits it to the back side without distortions. This regime of operation is called canalization and is inherent in flat lenses formed by electromagnetic crystals. The theoretical estimations are supported by numerical simulations and experimental verification. The subwavelength resolution of ?/15 and 18% bandwidth of operation are demonstrated at gigahertz frequencies. The structure is capable to transport sub-wavelength images without distortion to nearly unlimited distances.

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