Title :
FBAR filter with asymmetric frequency response and improved selectivity and passband width
Author :
Uzunov, Ivan ; Gajdajiev, Dobromir ; Yantchev, Ventsislav
Author_Institution :
Dept. of Telecommun. Networks, Tech. Univ. of Sofia, Sofia, Bulgaria
Abstract :
The paper is dedicated to improving the frequency response of FBAR filters by replacing some of the single FBARs with two resonators connected in parallel. The method is applied for the basic lattice filter architecture and its modification with twice fewer number of FBARs. The conditions that must satisfy the resonator parameters are derived by theoretical considerations and computer simulations.
Keywords :
band-pass filters; frequency response; lattice filters; surface acoustic wave resonator filters; FBAR filter; asymmetric frequency response; film bulk acoustic-wave resonators; lattice filter architecture; passband width; resonator parameters; selectivity; Film bulk acoustic resonators; Filtering theory; Frequency response; Lattices; Passband; Resonant frequency; Resonator filters; FBAR filters; Film Bulk Acoustic-wave Resonators (FBAR); piezo-resonator filters; radio-frequency filters;
Conference_Titel :
Mixed Design of Integrated Circuits and Systems (MIXDES), 2011 Proceedings of the 18th International Conference
Conference_Location :
Gliwice
Print_ISBN :
978-1-4577-0304-1
