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Material Characterization of Liquid Crystals at THz-Frequencies using a Free Space Measurement Setup

Köberle, M. ; Göbel, T. ; Schönherr, D. ; Müller, S. ; Jakoby, Rolf ; Meissner, P. ; Hartnagel, H.-L. (2008):
Material Characterization of Liquid Crystals at THz-Frequencies using a Free Space Measurement Setup.
In: GeMiC 2008, pp. 142-145,
VDE-Verlag, German Microwave Conference (GeMIC 2008), Hamburg, Germany, 10.-12.03.2008, ISBN 978-3-8007-3086-5,
[Conference or Workshop Item]

Abstract

Liquid crystals (LCs) are promising materials for passive tunable components at microwave frequencies and optics. With increasing interest in the THz frequency domain the quest on tunable THz components rises. For the systematic design of such tunable components like phase shifters or reflect arrays a detailed knowledge of the dielectric material properties at the intended frequency is needed. In this paper we show measurement results for the characterization of two commercial LCs (K15 and E7, both from Merck) at frequencies between 100 and 350 GHz performed with a free space CW THz system. An anisotropy of DeltanK15 = 0, 05 and DeltanE7 = 0, 08, respectively, could be determined in this frequency range.

Item Type: Conference or Workshop Item
Erschienen: 2008
Creators: Köberle, M. ; Göbel, T. ; Schönherr, D. ; Müller, S. ; Jakoby, Rolf ; Meissner, P. ; Hartnagel, H.-L.
Title: Material Characterization of Liquid Crystals at THz-Frequencies using a Free Space Measurement Setup
Language: English
Abstract:

Liquid crystals (LCs) are promising materials for passive tunable components at microwave frequencies and optics. With increasing interest in the THz frequency domain the quest on tunable THz components rises. For the systematic design of such tunable components like phase shifters or reflect arrays a detailed knowledge of the dielectric material properties at the intended frequency is needed. In this paper we show measurement results for the characterization of two commercial LCs (K15 and E7, both from Merck) at frequencies between 100 and 350 GHz performed with a free space CW THz system. An anisotropy of DeltanK15 = 0, 05 and DeltanE7 = 0, 08, respectively, could be determined in this frequency range.

Title of Book: GeMiC 2008
Publisher: VDE-Verlag
ISBN: 978-3-8007-3086-5
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) > Microwave Engineering
18 Department of Electrical Engineering and Information Technology > Microwave Electronics
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP)
Event Title: German Microwave Conference (GeMIC 2008)
Event Location: Hamburg, Germany
Event Dates: 10.-12.03.2008
Date Deposited: 27 Jan 2012 15:19
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