Title :
A 3.8 GHz tunable filter based on ferroelectric interdigitated capacitors
Author :
Ghalem, A. ; Ponchel, F. ; Remiens, D. ; Lasri, Tuami
Author_Institution :
IEMN - MIMM team, Valenciennes, France
Abstract :
In this paper, a tunable filter using ferroelectric capacitor is described. The interdigitated capacitor (IDC) is based on Barium Strontium Titanate (BST) thin-film. After the material and capacitor characterization in microwave frequency domain, the IDC has been introduced in a hairpin filter. The characterization of the filter exhibits a center frequency shift from 3.5 GHz (under 0 kV/cm) to 3.9 GHz (under 300 kV/cm) which corresponds to a relative shift of 11.4%.
Keywords :
barium compounds; ferroelectric capacitors; microwave filters; strontium compounds; Ba0.3Sr0.7TiO3; ferroelectric interdigitated capacitors; frequency 3.8 GHz; hairpin filter; microwave frequency domain; tunable filter; Buffer layers; Capacitance; Capacitors; Microwave filters; Microwave measurement; Permittivity; BST; Ferroelectic; Hairpin filter; Interdigitated Capacitors; tunability;
Conference_Titel :
Applications of Ferroelectric and Workshop on the Piezoresponse Force Microscopy (ISAF/PFM), 2013 IEEE International Symposium on the
Conference_Location :
Prague
DOI :
10.1109/ISAF.2013.6748746
