Title :
Tunable liquid-crystal millimeter-wave bandpass filter using periodical structure
Author :
Yazdanpanahi, Mani ; Deo, P. ; Mirshekar-Syahkal, D.
Author_Institution :
Sch. of Comput. Sc. & Electron. Eng., Univ. of Essex, Colchester, UK
Abstract :
For the first time, a tunable liquid crystal (LC) bandpass filter using a microstrip periodical structure for applications at millimeter-waves is presented. In the LC default state, it operates at 49 GHz with about 20% fractional bandwidth (9 GHz). The filter tunability range is 3.2 GHz over bias voltages 0 to 10 V and its insertion loss is about 4.7 dB. Dimensions of the filter can be scaled to increase its operating frequency to 77 GHz and hence, is a promising component for 60 GHz systems.
Keywords :
band-pass filters; liquid crystal devices; microstrip filters; millimetre wave filters; LC default state; bandwidth 9 GHz; filter tunability range; fractional bandwidth; frequency 3.2 GHz; frequency 49 GHz; frequency 60 GHz; frequency 77 GHz; insertion loss; loss 4.7 dB; microstrip periodical structure; periodical structure; tunable liquid-crystal millimeter-wave bandpass filter; Band-pass filters; Dielectrics; Insertion loss; Microwave filters; Periodic structures; Resonator filters; Substrates; 60 GHz; bandpass filter; liquid crystal (LC); millimeter-wave;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2014 IEEE
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4799-2298-7
DOI :
10.1109/RWS.2014.6830078
