Planar interdigital-coupled UWB bandpass filter with a notched band

Conference Paper

This paper presents a planar compact microstrip interdigital-coupled notch-band ultra-wideband (UWB) bandpass filter (BPF). The proposed five high-impedance interdigital lines are employed to not only realize strong coupling as feed lines, but also create a controllable notched band in the UWB passband. A prototype of the proposed notch-band UWB BPF has been designed and fabricated. The measured results illustrate that the 3 dB fractional bandwidth (FBW) of the filter is 125%, and the insertion loss of the notched band within the UWB passband is 12 dB at 5.8 GHz.

Full Text

Duke Authors

Cited Authors

  • Xu, K; Zhang, Y; Joines, WT; Liu, QH

Published Date

  • September 18, 2014

Published In

Start / End Page

  • 1694 - 1695

International Standard Serial Number (ISSN)

  • 1522-3965

International Standard Book Number 13 (ISBN-13)

  • 9781479935406

Digital Object Identifier (DOI)

  • 10.1109/APS.2014.6905173

Citation Source

  • Scopus