DocumentCode
1364936
Title
A Novel Low-Pass Filter With an Embedded Band-Stop Structure for Improved Stop-Band Characteristics
Author
He, Qijuan ; Liu, Changjun
Author_Institution
Sch. of Electron. & Inf. Eng., Sichuan Univ., Chengdu, China
Volume
19
Issue
10
fYear
2009
Firstpage
629
Lastpage
631
Abstract
This letter presents a novel design of a microstrip low- pass filter (LPF) with an embedded band-stop structure, which is constructed from a simple two transmission line band-stop filter. The band-stop structure is ingeniously embedded into a classical step-impedance microstrip LPF. The stop-band of the proposed LPF is more than two times broader than the original design, while its cut-off frequency remains at 1.8 GHz. The embedded structure does not increase the physical dimension of the LPF, but improves the performance significantly. Measured results agree with simuAcircnot lation well, and validate the dual-frequency design method.
Keywords
band-stop filters; low-pass filters; microstrip filters; embedded band-stop structure; frequency 1.8 GHz; improved stop-band characteristics; microstrip low-pass filter; step-impedance microstrip low-pass filter; Band-stop filters; low-pass filters (LPFs); microstrip;
fLanguage
English
Journal_Title
Microwave and Wireless Components Letters, IEEE
Publisher
ieee
ISSN
1531-1309
Type
jour
DOI
10.1109/LMWC.2009.2029738
Filename
5233751
Link To Document