Title :
New tunable coplanar microwave phase shifter with nematic crystal liquid
Author :
Sahbani, Fehim ; Tentillier, N. ; Gharsallah, A. ; Gharbi, A. ; Legrand, C.
Author_Institution :
LEMCEL
Abstract :
The liquid crystals known for their applications as viewers have interesting features for a microwave circuit design\´s so-called "agile frequency". These circuits offer the advantage to change their frequency response according to an external command. Here we present a new phase shifter agile frequency liquid crystal substrate. Indeed the nature of viscous liquid crystal requires development ad-hoc structures.The measurements are characterised in [26-40] GHz band. This phase shifter with agile frequency will be integrated into an antenna network and will be used to control the radiation pattern of the synthesised array antenna.
Keywords :
antenna accessories; liquid crystal devices; microwave phase shifters; nematic liquid crystals; ad-hoc structures; antenna network; coplanar microwave phase shifter; microwave circuit; nematic crystal liquid; phase shifter agile frequency liquid crystal substrate; viscous liquid crystal; Antenna measurements; Antenna radiation patterns; Circuit synthesis; Frequency response; Frequency synthesizers; Integrated circuit measurements; Liquid crystals; Phase shifters; Phased arrays; Tunable circuits and devices; antenna; frequency agility; liquid crystals:LC; microwave; phase shifter;
Conference_Titel :
Design and Test Workshop, 2008. IDT 2008. 3rd International
Conference_Location :
Monastir
Print_ISBN :
978-1-4244-3479-4
Electronic_ISBN :
978-1-4244-3478-7
DOI :
10.1109/IDT.2008.4802470
