Microwave Polymer Dispersed Liquid Crystal Loaded Variable Phase Shifter

We discuss a method for the production of microwave polymer dispersed liquid crystal devices and show how to obtain a fine grained uniform fibrous polymer network. With a layer thickness of 50 μm, an applied voltage of 100 V and a polymer concentration of 7 wt%, we show that the decay time can be re...

Full description

Saved in:
Bibliographic Details
Published in:Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) Pa. : 2003), 2007-12, Vol.476 (1), p.15/[261]-30/[276]
Main Authors: Kamei, Toshihisa, Dinh, Nguyen Quoc, Utsumi, Yozo
Format: Article
Language:English
Subjects:
delay lines
liquid crystal devices
microstrip resonators
phase shifter
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We discuss a method for the production of microwave polymer dispersed liquid crystal devices and show how to obtain a fine grained uniform fibrous polymer network. With a layer thickness of 50 μm, an applied voltage of 100 V and a polymer concentration of 7 wt%, we show that the decay time can be reduced to about 1/30th that of a plain liquid crystal at the expense of an increase in rise time of about 2.5 times and a deterioration of dielectric birefringence of about 50%. Finally we discuss the results obtained with a prototype polymer dispersed liquid crystal loaded variable phase shifter in the 15 GHz band.
ISSN:1542-1406
1563-5287
DOI:10.1080/15421400701732589