Open AccessHigh selectivity UWB bandpass filter with controllable bandwidth of dual notch bands
Author(s) -
Mirzaee M.,
Noghanian S.,
Virdee B.S.
Publication year - 2014
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.2014.2336
Subject(s) - band stop filter , voltage controlled filter , band pass filter , bandwidth (computing) , superposition principle , electronic engineering , high pass filter , ultra wideband , prototype filter , wideband , electronic filter topology , passband , filter design , computer science , filter (signal processing) , physics , low pass filter , engineering , telecommunications , electrical engineering , quantum mechanics
A technique to implement and control the bandwidth of notch bands in an ultra‐wideband (UWB) bandpass filter (BPF) based on signal superposition is described. The filter is realised by employing two wideband BPFs in a parallel configuration to establish two signal paths between input/output ports. The proposed technique can substantially increase the bandwidth of the notch band by ∼370% in comparison with the notch‐band filter designs based on transversal signal interaction. The proposed filter exhibits a quasi‐elliptical response over the span of the UWB spectrum defined by the Federal Communication Commission. The compact filter design has a size of 88.92 mm 2 .