Title :
A tunable asymmetric notch filter using RFMEMS
Author :
De Luis, J.R. ; Morris, A.S. ; Gu, Qingyi ; De Flaviis, Franco
Author_Institution :
University of California Irvine, United States
Abstract :
In this paper, a single pole single zero asymmetric notch filter using RF micro electromechanical tunable capacitors is presented. The high Q value of the tunable capacitors enables this filter to achieve 25.5dB rejection with less than 1.2dB insertion loss over a 5MHz signal bandwidth. This tunable filter is designed to suppress transmission leakage in the IMT Band I (1.92–1.98GHz) band for handset WCDMA receivers. It also can serve as a component in handset tunable duplexers.
Keywords :
Bandwidth; Capacitors; Filters; Insertion loss; Multiaccess communication; Poles and zeros; Radio frequency; Radiofrequency microelectromechanical systems; Telephone sets; Tunable circuits and devices;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5518229
