Tunable Bulk Acoustic Wave Resonators Based on BaxSr1-xTiO3 Thin Films
Licentiatavhandling, 2009

The main focus of this thesis is the study of a novel component based on ferroelectric BaxSr1−xTiO3 thin films – the tunable thin film bulk acoustic resonator (TFBAR). The tunable TFBAR utilizes a dc field induced piezoelectric effect in the ferroelectric film, in contrast to conventional fixed frequency TFBARs, widely used for filtering applications in wireless communication systems, which are based on ordinary piezoelectric materials. This allows dc field tuning of the resonance frequency as well as switching between resonator and capacitor response.

piezoelectric resonators

bulk acoustic wave devices

field induced piezoelectric effect

tunable devices

ferroelectric films

Luftbryggan, Kemivägen 9, Chalmers University of Technology
Opponent: Prof. Thorvald Andersson

Författare

John Berge

Chalmers, Teknisk fysik, Fysikalisk elektronik

The effect of growth temperature on the nanostructure and dielectric response of BaTiO3 ferroelectric films

Thin Solid Films,; Vol. 515(2007)p. 6302-6308

Artikel i vetenskaplig tidskrift

Tunable Solidly Mounted Thin Film Bulk Acoustic Resonators Based on BaxSr1-xTiO3 Films

IEEE Microwave and Wireless Components Letters,; Vol. 17(2007)p. 655-657

Artikel i vetenskaplig tidskrift

Ämneskategorier

Annan materialteknik

Luftbryggan, Kemivägen 9, Chalmers University of Technology

Opponent: Prof. Thorvald Andersson