Investigation of the cutting plane and tolerance analysis of cross-coupled W-band waveguide filters with multiple transmission zeros by source to load cross-coupling

In this paper, the influence of the cutting plane as well as the orientation of the cavities in cross-coupled W-band waveguide filters are investigated. When waveguide filters are manufactured with the commonly known CNC (computer numerical control) milling technique, at least one cutting plane is r...

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Bibliographic Details
Published in:International journal of microwave and wireless technologies 2022-04, Vol.14 (3), p.369-378
Main Authors: Miek, Daniel, Bartlett, Chad, Kamrath, Fynn, Boe, Patrick, Höft, Michael
Format: Article
Language:English
Subjects:
Cross coupling
Cutting
Design
Electromagnetic wave filters
Magnetic fields
Manufacturing
Numerical controls
Research Paper
Satellite communications
Tolerances
Waveguide filters
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Summary:In this paper, the influence of the cutting plane as well as the orientation of the cavities in cross-coupled W-band waveguide filters are investigated. When waveguide filters are manufactured with the commonly known CNC (computer numerical control) milling technique, at least one cutting plane is required. The position of this cutting plane has an impact on the composition of the cavities, the manufacturing accuracy, and on the maximal number of transmission zeros (TZs) introduced by a direct source to load (SL) cross-coupling. Similar filter set-ups therefore may show different performances depending on the position of this cutting plane. To examine all these effects, three similar fourth-order W-band filter set-ups are realized with distinct cutting planes and different oriented cavities. The filters are compared in terms of the sensitivity to manufacturing tolerances, the maximal number of TZs introduced by a direct SL cross-coupling as well as their spurious mode performance.
ISSN:1759-0787
1759-0795
DOI:10.1017/S1759078721000957