Development of miniature filters for wireless applications

Author

Lakin, K.M. ; Kline, G.R. ; McCarron, K.T.

Author_Institution

TFR Technol. Inc., Redondo Beach, OR, USA

fYear

1995

fDate

16-20 May 1995

Firstpage

883

Abstract

Miniature filters have been under development for wireless applications from 500 MHz to over 6 GHz using thin piezoelectric films on common substrates. Ladder filters have achieved insertion losses in the 3 dB range using aluminum nitride films for the piezoelectric and appropriate substrates such as silicon, sapphire, and glass. The ladder filters consist of interconnected series and shunt resonators forming a monolithic structure on a single die. This paper discusses recent results in the development of miniature filters with application to cellular phone, GPS, PCN, and other wireless systems.<>

Keywords

UHF filters; band-pass filters; crystal resonators; ladder filters; passive filters; radio equipment; resonator filters; 3 dB; 500 MHz to 6 GHz; Al/sub 2/O/sub 3/; AlN; GPS; PCN; Si; Si substrate; cellular phones; glass substrate; interconnected series resonators; interconnected shunt resonators; ladder filters; miniature filters; monolithic structure; sapphire substrate; thin piezoelectric films; wireless applications; Aluminum nitride; Cellular phones; Glass; Global Positioning System; Insertion loss; Personal communication networks; Piezoelectric films; Resonator filters; Semiconductor films; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1995., IEEE MTT-S International

Conference_Location

Orlando, FL, USA

ISSN

0149-645X

Print_ISBN

0-7803-2581-8

Type

conf

DOI

10.1109/MWSYM.1995.405906

Filename

405906