Title :
Reconfigurable waveguide polariser based on liquid crystal for continuous tuning of linear polarisation
Author :
Strunck, Sebastian ; Karabey, Onur Hamza ; Gaebler, Alexander ; Jakoby, Rolf
Author_Institution :
Inst. of Microwaves & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
A reconfigurable waveguide polariser for changing the linear polarisation of the TE11 mode in a circular waveguide is presented. A liquid crystal based twisted nematic cell concept, similar to a liquid crystal display, is innovatively adapted for the tunable RF polariser. The polarisation state can be continuously turned in the range from 90° to -90° with a relatively low insertion loss between 4 to 5 dB at 50 GHz.
Keywords :
circular waveguides; electromagnetic wave polarisation; nematic liquid crystals; waveguide polarisers; TE11 mode; circular waveguide; continuous linear polarisation tuning; frequency 50 GHz; insertion loss; liquid crystal; polarisation state; reconfigurable waveguide polariser; tunable RF polariser; twisted nematic cell;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.0259
