Title :
Reconfigurable circuits for wireless applications using KTN ferroelectrics
Author :
Laur, Vincent ; Moussavou, Arnaud ; Tanné, Gérard ; Laurent, Paul ; Bouquet, Valérie ; Députier, Stéphanie ; Guilloux-viry, Maryline ; Huret, Fabrice
Author_Institution :
LEST- UMR CNRS 6165, Brest
Abstract :
This paper reports on a study of KTN-based ferroelectric devices. KTN compositions with 40 to 60% of tantalum were investigated at microwave frequencies. Several basic circuits (coplanar waveguides, stub resonators and interdigital capacitors) were realized to inter-compare the performances of the different compositions. Maximum tuning factors of 25.8% for stubs and 39.5% for interdigital capacitors were got under a 60-kV/cm DC field with the KTaO0.45Nb0.55O3 composition. The values of commutation quality factors got for interdigital capacitors appeared to be slightly dependent on the composition.
Keywords :
capacitors; coplanar waveguides; ferroelectric devices; microwave circuits; potassium compounds; resonators; DC field; KTN ferroelectrics; KTaO3NbO3; commutation quality factors; coplanar waveguides; ferroelectric devices; interdigital capacitors; reconfigurable circuits; stub resonators; wireless applications; Capacitors; Circuit optimization; Coplanar transmission lines; Coplanar waveguides; Ferroelectric devices; Ferroelectric materials; Insertion loss; Microwave circuits; Probes; Tunable circuits and devices; Coplanar waveguides; ferroelectric devices; microwave resonators; thin films; tunable circuits and devices;
Conference_Titel :
Microwave Conference, 2007. European
Conference_Location :
Munich
Print_ISBN :
978-2-87487-001-9
DOI :
10.1109/EUMC.2007.4405136
