Title :
Capacitively coupled dc voltage switchable barium strontium titanate solidly mounted resonator filter
Author :
Saddik, George N. ; York, Robert A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California Santa Barbara, Santa Barbara, CA, USA
Abstract :
A dc voltage switchable barium strontium titanate solidly mounted bulk acoustic wave capacitively coupled resonators filter has been demonstrated for the first time. The filter consists of two switchable bulk acoustic wave solidly mounted resonators coupled with a high-Q barium strontium titanate capacitor. The resonators have a measured loaded series and parallel quality factors of 135 and 87 in the on-state (30V), respectively. The electromechanical coupling coefficient of the resonators is 6.34 % in the on-state (30V). The insertion loss and return loss of the filter is -3.66 dB and -13.74 dB, respectively.
Keywords :
barium compounds; bulk acoustic wave devices; capacitors; resonator filters; resonators; strontium compounds; BaSrTiO3; capacitively coupled DC voltage switchable mounted resonator filter; electromechanical coupling coefficient; high-Q capacitor; insertion loss; loss -13.74 dB; loss -3.66 dB; parallel quality factors; return loss; switchable bulk acoustic wave solidly mounted resonator; voltage 30 V; Acoustic waves; Electrodes; Microwave filters; Q factor; Resonator filters; Strontium; Acoustic devices; barium compounds; bulk acoustic wave devices; ferroelectric films; piezoelectric devices; resonator filters; voltage control;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972937
