CUED Publications database

A tunable wideband microstrip bandstop filter based on liquid crystal materials

Cai, L and Xu, H and Pivnenko, M and Chu, D (2014) A tunable wideband microstrip bandstop filter based on liquid crystal materials. In: UNSPECIFIED pp. 656-657..

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Abstract

© 2014 IEEE. A compact liquid crystal (LC) based tunable wideband microstrip bandstop filter (BSF) is presented in this paper. To realize a compact size and wide stopband bandwidth, a double-stub bending structure was designed. The BSF stopbands can be tuned by applying a voltage between 0-20 V to regulate the LC dielectric permittivity. A tunability >7% and 3dB bandwidth > 3 GHz and 2.5 GHz for the first and second stopbands respectively were achieved. The rejection level was higher than 41 dB. Such a LC based BSF device with a high tunability, wide stopband bandwidth, low driving voltage and compact size are useful in a wide range of applications.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:42
Last Modified: 18 Feb 2021 16:14
DOI: 10.1109/ICCPS.2014.7062370