Open AccessDesign of wide‐stopband microstrip bandpass filter with assistance of spur lines
Author(s) -
Tang C.W.,
Teng C.H.,
Sun J.M.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2012.3384
Subject(s) - band pass filter , stopband , passband , microstrip , spur , electronic filter topology , electronic engineering , elliptic filter , filter (signal processing) , prototype filter , butterworth filter , computer science , acoustics , low pass filter , topology (electrical circuits) , electrical engineering , engineering , physics , structural engineering
A novel microstrip bandpass filter with compact size is proposed. With two short‐circuited stubs, one open‐circuited coupled line using symmetrical feeding, and two spur lines, a wide passband can be obtained. Detailed design and synthesis procedures are provided for filter development. Moreover, the electromagnetic simulator IE3D is used; the prototype of the bandpass filter is consequently fabricated and measured. Agreement between measured results and the theoretical prediction validates the proposed structure.