Title :
Tunable DBR resonators using KTN ferroelectric thin-films
Author :
Laur, Vincent ; Moussavou, Arnaud ; Tanne, Gerard ; Laurent, Paul ; Bouquet, Valerie ; Deputier, Stephanie ; Guilloux-Viry, Maryline ; Huret, Fabrice
Author_Institution :
LEST -UBO/ENSTBr, Brest
Abstract :
Tunable dual behavior resonators were realized on using KTN ferroelectric thin-films. Their measurements demonstrated an agility of more than 21% in the 6.2-7.6 GHz frequency range under an applied field of 80 kV/cm. At the same time, insertion losses at the center frequency decreased from 3.27 to 2.06 dB; reflection losses were better than 11.5 dB at the same frequency. This study evidenced the potential of the DBR structure for tuning applications as well as the high tuning factor of KTN thin-films at microwave frequencies.
Keywords :
coplanar waveguides; dielectric resonators; ferroelectric thin films; microwave devices; potassium compounds; resonators; tantalum compounds; tuning; KTN ferroelectric thin-films; KTaO3NbO3; coplanar waveguides; ferroelectric devices; frequency 6.2 GHz to 7.6 GHz; insertion losses; microwave measurements; reflection losses; tunable DBR resonators; tunable dual behavior resonators; Circuit optimization; Dielectric losses; Distributed Bragg reflectors; Ferroelectric materials; Microwave filters; Microwave frequencies; Permittivity; Thin films; Tunable circuits and devices; Tuning; Coplanar waveguides; ferroelectric devices; microwave measurements; resonators; tunable filters;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0688-9
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380256
