Title :
Easily adjustable FBAR filter circuit
Author :
Uzunov, I.S. ; Bradvarov, R.M. ; Statev, P.B. ; Boyanov, B.D.
Author_Institution :
Dept. of Commun. Networks, Tech. Univ. of Sofia, Sofia, Bulgaria
Abstract :
A filter circuit employing film bulk acoustic resonators (FBAR) or other types of piezoelectric resonators is proposed. It consists of two FBARs and two amplifiers, and is equivalent to a lattice FBAR filter. The basic advantage of the new circuit is its easy tuning by using the amplifier output impedances and/or extra resistors.
Keywords :
acoustic resonator filters; amplifiers; circuit tuning; crystal resonators; adjustable FBAR filter circuit; amplifier; film bulk acoustic resonators; lattice FBAR filter; piezoelectric resonators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.0308
