Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities

Abstract This letter presents the design of a novel dual‐mode dual‐band bandpass filter that utilises the TM210 and TM020 modes of cylindrical cavity resonators for millimetre‐wave operation when fed with standard WR‐10 waveguide ports. In this manner, the two selected modes of the cylindrical cavit...

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Main Authors: Chad Bartlett, Michael Höft
Format: Article
Language:English
Published: Wiley 2021-04-01
Series:Electronics Letters
Subjects:
Online Access:https://doi.org/10.1049/ell2.12127
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author Chad Bartlett
Michael Höft
author_facet Chad Bartlett
Michael Höft
author_sort Chad Bartlett
collection DOAJ
description Abstract This letter presents the design of a novel dual‐mode dual‐band bandpass filter that utilises the TM210 and TM020 modes of cylindrical cavity resonators for millimetre‐wave operation when fed with standard WR‐10 waveguide ports. In this manner, the two selected modes of the cylindrical cavity resonators are demonstrated as a single propagation path for fixed dual‐passband responses without the need of cavity perturbations or tuning screws. The passbands are designated for centre frequencies at approximately 102.8 and 110.9 GHz and exhibit a four‐pole Chebyshev characteristic in each of the passbands, which are separated by a transmission zero location. Simulated and measured results of the prototype are presented to verify the design.
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spelling doaj.art-128416a3848e4dccb2d8afbd0c12afb52022-12-22T03:15:34ZengWileyElectronics Letters0013-51941350-911X2021-04-0157832833010.1049/ell2.12127Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavitiesChad Bartlett0Michael Höft1Institute of Electrical and Information Technology, Chair of Microwave Engineering University of Kiel Kiel GermanyInstitute of Electrical and Information Technology, Chair of Microwave Engineering University of Kiel Kiel GermanyAbstract This letter presents the design of a novel dual‐mode dual‐band bandpass filter that utilises the TM210 and TM020 modes of cylindrical cavity resonators for millimetre‐wave operation when fed with standard WR‐10 waveguide ports. In this manner, the two selected modes of the cylindrical cavity resonators are demonstrated as a single propagation path for fixed dual‐passband responses without the need of cavity perturbations or tuning screws. The passbands are designated for centre frequencies at approximately 102.8 and 110.9 GHz and exhibit a four‐pole Chebyshev characteristic in each of the passbands, which are separated by a transmission zero location. Simulated and measured results of the prototype are presented to verify the design.https://doi.org/10.1049/ell2.12127Passive filters and other passive networksWaveguide and microwave transmission line components
spellingShingle Chad Bartlett
Michael Höft
Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities
Electronics Letters
Passive filters and other passive networks
Waveguide and microwave transmission line components
title Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities
title_full Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities
title_fullStr Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities
title_full_unstemmed Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities
title_short Dual‐mode dual‐band bandpass filter design utilising cylindrical TM‐mode cavities
title_sort dual mode dual band bandpass filter design utilising cylindrical tm mode cavities
topic Passive filters and other passive networks
Waveguide and microwave transmission line components
url https://doi.org/10.1049/ell2.12127
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AT michaelhoft dualmodedualbandbandpassfilterdesignutilisingcylindricaltmmodecavities