High performance TD-SCDMA band-pass filter based on film bulk acoustic resonator technology

Author

Mingke Qi ; Daihua Zhang ; Wei Pang ; Hao Zhang

Author_Institution

State Key Lab. of Precision Meas. Technol., Tianjin Univ., Tianjin, China

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

547

Lastpage

549

Abstract

This paper presents a high performance TD-SCDMA band-pass filter based on film bulk acoustic resonator (FBAR) technology. The filter is composed of a group of FBARs connected in ladder configuration. Excellent quality factor greater than 1,000 has been achieved at resonant frequency near 2 GHz for the FBAR. The TD-SCDMA FBAR filter has been fabricated and tested. The filter demonstrates low passband insertion loss of 1.7 dB and high stopband rejection greater than 35 dB.

Keywords

Q-factor; acoustic resonator filters; band-pass filters; bulk acoustic wave devices; code division multiple access; time division multiple access; FBAR filter; FBAR technology; TD-SCDMA; band-pass filter; film bulk acoustic resonator technology; ladder configuration; passband insertion loss; quality factor; resonant frequency; stopband rejection; Band pass filters; Electrodes; Film bulk acoustic resonators; Passband; Resonant frequency; Resonator filters; Time division synchronous code division multiple access; 3G; FBAR; Filter; TD-SCDMA;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421659

Filename

6421659