Title :
Wideband bandstop filter with sub-harmonic stubs
Author :
Malherbe, J.A.G.
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Univ. of Pretoria, Pretoria, South Africa
Abstract :
The performance of a wideband bandstop transmission line filter employing a series overlay inductor over two stubs resonating at, respectively, one half and one quarter of the centre frequency is described. The structure contributes seven transmission zeros to the stopband and the performance compares to that of a Cauer filter. The structure has the advantage of having impedance levels that are readily realisable.
Keywords :
band-stop filters; broadband networks; microstrip filters; passive filters; transmission lines; Cauer filter; series overlay inductor; subharmonic stubs; transmission line filter; wideband bandstop filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.0604
