Microwaves: thin metal slits and liquid crystals
Sambles, J. Roy; Hibbins, Alastair P.; Kelly, Robert J.; et al.Suckling, James R.; Yang, Fuzi
Date: 30 November 2004
Article
Journal
Proceedings of SPIE
Publisher
SPIE
Publisher DOI
Abstract
Using liquid crystals to control the propagation of microwaves is a potentially interesting technology. By incorporating small amounts of liquid crystal in thin slat metal structures through which the microwaves may resonantly pass a whole new range of voltage tuned microwave devices are becoming available. Metallic sub-wavelength slit ...
Using liquid crystals to control the propagation of microwaves is a potentially interesting technology. By incorporating small amounts of liquid crystal in thin slat metal structures through which the microwaves may resonantly pass a whole new range of voltage tuned microwave devices are becoming available. Metallic sub-wavelength slit structures at microwave frequencies have been constructed which show Fabry-Perot type resonances in very thin slits. If the dielectric in such thin slits is an aligned liquid crystal it is found possible to voltage-control the resonant frequencies. Novel selective filters and structures for microwave beam steering have been fabricated leading to a new generation of liquid crystal controlled devices.
Physics and Astronomy
Faculty of Environment, Science and Economy
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