Transmission line filters with harmonic parallel foster sections
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Date
Authors
Malherbe, J.A.G., 1940-
Luus, Pierre D.
Uys, Johan C.
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
Conventional wideband bandstop filters use Cauer prototypes, but become nonrealizable with Kuroda–Levy transforms for bandwidths of 150% or more. Transmission line filters with harmonic stubs have been shown to be realizable at these bandwidths, but have limited performance ranges due to the fixed positions of the transmission zeros. In this article, two structures that use shunt Foster resonators that enable the shift of the transmission zeros are described. Simulated and measured properties show that greatly improved performance can be realized while not adding to the complexity of the structure
Description
Keywords
Harmonic stub filter, Bandstop filter, Shunt Foster sections, Pseudo-elliptic function response
Sustainable Development Goals
Citation
Malherbe, JAG, Luus, PD & Uys, JC 2013, 'Transmission line filters with harmonic parallel foster sections', Microwave and Optical Technology Letters, vol. 55, no. 8, pp. 1724-1728.