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Liquid crystal-based tunable CRLH-transmission line for leaky wave antenna applications at Ka-Band

Published online by Cambridge University Press:  27 March 2014

María Roig ,
Matthias Maasch ,
Christian Damm  and
Rolf Jakoby
María Roig*
Affiliation:
Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Darmstadt, Germany. Phone: + 49 6151 16-75201
Matthias Maasch
Affiliation:
Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Darmstadt, Germany. Phone: + 49 6151 16-75201
Christian Damm
Affiliation:
Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Darmstadt, Germany. Phone: + 49 6151 16-75201
Rolf Jakoby
Affiliation:
Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Darmstadt, Germany. Phone: + 49 6151 16-75201
*
Corresponding author: M. Roig Email: roig@imp.tu-darmstadt.de
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Abstract

In this work, a liquid crystal based tunable composite right/left-handed transmission line for future leaky wave antennas working at the Ka-band is presented. The tuning of the liquid crystal is achieved by means of magnetic and electric biasing. For this purpose, different prototypes are fabricated for each biasing technique and their dispersive characteristics compared. Electric tunability is achieved by implementing highly resistive bias lines in the unit cell layout. Both techniques yield similar tuning capabilities at the operation frequency of 27GHz whereas the electric one has the advantage of being easily integratable in the layout.

Keywords

Antenna designModeling and measurementsMeta-materials and Photonic bandgap structures
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 6 , Issue 3-4: European Microwave Week 2013 , June 2014 , pp. 325 - 330
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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