Title :
New Materials and new Devices for Filtering in Radio-communication Systems
Author :
Detaint, Jacques ; Capelle, Bernard ; Epelboin, Yves
Author_Institution :
IMPMC, Universites Paris VI et Paris VII
Abstract :
There is now a large market for the UHF filters made with piezoelectric resonators due to their large use in radio-communication systems. These filters are presently built with materials presenting only a moderate coupling coefficient and using very similar circuit topologies. In this contribution we demonstrate that this lead to a limitation of their performances and we discuss solutions to improve them. These solutions are found considering alternative filter topologies and/or other materials and/or new kinds of devices (resonators or monolithic filters)
Keywords :
UHF filters; crystal resonators; UHF filters; piezoelectric resonators; radio-communication systems; Acoustic waves; Circuit topology; Coupling circuits; Crystalline materials; Filtering; Frequency; Mobile communication; Resonator filters; Surface acoustic waves; Telephone sets;
Conference_Titel :
International Frequency Control Symposium and Exposition, 2006 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0074-0
Electronic_ISBN :
1-4244-0074-0
DOI :
10.1109/FREQ.2006.275464
