Title :
Tunable band-pass filter based on Liquid Crystal
Author :
Goelden, Felix ; Gaebler, Alexander ; Karabey, Onur ; Goebel, Mark ; Manabe, Atsutaka ; Jakoby, Rolf
Author_Institution :
Microwave Eng., Tech. Universitt Darmstadt, Darmstadt, Germany
Abstract :
This paper presents a design study of a tunable band-pass filter. The tunability is achieved by using Liquid Crystal (LC) as a tunable dielectric. The respective three-pole filter is designed to have a center frequency of 20 GHz. It is shown that the center frequency of the designed filter can be shifted by approx. 2 GHz. The device is fabricated using a glass-LC-glass sandwich structure with a total thickness of 600 μm. The lateral dimensions of a single filter structure are 9 × 4 mm.
Keywords :
band-pass filters; dielectric materials; liquid crystals; microwave filters; frequency 20 GHz; glass-LC-glass sandwich structure; liquid crystal; size 600 mum; three-pole filter; tunable band-pass filter; tunable dielectric; Band pass filters; Capacitors; Dielectric losses; Dielectric materials; Frequency; Liquid crystals; Permittivity; Resonator filters; Surface treatment; Voltage;
Conference_Titel :
Microwave Conference, 2010 German
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4933-0
Electronic_ISBN :
978-3-9812668-1-8
