Tunable and switchable resonators and filters based on ferroelectric BST thin films for wireless communications

Author

Kalkur, T.S. ; Mansour, Almonir

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Colorado, Springs, CO, USA

fYear

2015

fDate

24-27 May 2015

Firstpage

5

Lastpage

8

Abstract

BAW resonators and filters with BST thin film are attracting the attention of many investigators because of their tunability and ability to switch with the applied bias voltage. In this paper, we will present our work on solidly mounted bulk acoustic resonators, filters and duplexers with spin-on metal organic solution deposited (MOSD) Barium Strontium Titanate(BST) films. Our recent research has shown that, the composite BST BAW fabricated with central floating electrode shows multiple modes of operation (low frequency mode and high frequency mode). Therefore, these composite resonators can be used to fabricate multiband resonators and filters.

Keywords

acoustic filters; acoustic resonators; barium compounds; bulk acoustic wave devices; strontium compounds; thin film devices; BAW filters; BAW resonators; BaSrTiO₃; applied bias voltage; composite resonators; ferroelectric BST thin films; floating electrode; frequency mode; multiband filters; multiband resonators; multiple modes; solidly mounted bulk acoustic resonators; spin-on metal organic solution deposited barium strontium titanate films; switchable resonators; tunable resonators; wireless communications; Electrodes; Film bulk acoustic resonators; Microwave filters; Resonant frequency; Resonator filters; Switches; BPF; SMR; bulk acoustic wave (BAW); switchable; tunable;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop (ISAF/ISIF/PFM), 2015 Joint IEEE International Symposium on the

Conference_Location

Singapore

Type

conf

DOI

10.1109/ISAF.2015.7172654

Filename

7172654