Accurate Modeling for Wideband Characterization of Nematic Liquid Crystals for Microwave Applications

Liquid crystals are attractive materials for use in millimeter-wave band communications devices due to their large birefringence and reconfigurability. However, characterizing these materials is challenging at these frequencies. This work describes the modeling tools that have been developed for the...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2009-12, Vol.57 (12), p.3293-3297
Main Authors: James, R., Fernandez, F.A., Day, S.E., Bulja, S., Mirshekar-Syahkal, D.
Format: Article
Language:English
Subjects:
Anisotropic magnetoresistance
Birefringence
Crystalline materials
finite-element methods
Frequency
Frequency ranges
Liquid crystal devices
Liquid crystals
Mathematical models
Microwave communication
Microwave devices
Microwaves
Millimeter wave propagation
millimeter-wave devices
Orientation
stripline
Wave propagation
Wideband
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Summary:Liquid crystals are attractive materials for use in millimeter-wave band communications devices due to their large birefringence and reconfigurability. However, characterizing these materials is challenging at these frequencies. This work describes the modeling tools that have been developed for the accurate analysis of the liquid crystal orientation and of the wave propagation through the inhomogeneous and anisotropic liquid crystal layer. It also shows how the modeling has been used in conjunction with experimental measurement to characterize liquid crystal materials over a wide frequency range.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2009.2033864