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

fYear

2014

fDate

19-23 Jan. 2014

Firstpage

163

Lastpage

165

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium (RWS), 2014 IEEE

Conference_Location

Newport Beach, CA

Print_ISBN

978-1-4799-2298-7

Type

conf

DOI

10.1109/RWS.2014.6830078

Filename

6830078