Title:
MICROWAVE CIRCULATOR WITH DEFORMABLE MEMBRANE
Document Type and Number:
WIPO Patent Application WO2003032432
Kind Code:
A8
Abstract:
A circulator comprises a housing (10) in two halves (12, 11) with a ferrite (18) and associated magnet (16) in a central portion of a first one of the halves (12), the second housing-half (11) above the ferrite having a membrane (32) which is deformable by operation of an adjusting means (33) upon the membrane, so as to adjust the size of an airgap (26) between the membrane and the ferrite. The membrane is preferably the residual portion of the second housing-half following a milling operation to provide a recess (31), the recess accommodating the adjusting means in the form of, e.g., a screw. To further enhance predictability of the performance characteristics of the circulator, the ferrite is seated in a hollow (36) formed in the first housing-half and the securing of the ferrite to the first housing-half is by way of an adhesive applied between a lateral face (37) of the ferrite and a corresponding lateral face of the hollow.
Inventors:
MARTIN SIEGBERT (DE)
EBINGER JUERGEN (DE)
BEIS KONSTANTIN (DE)
EBINGER JUERGEN (DE)
BEIS KONSTANTIN (DE)
Application Number:
PCT/IB2002/003938
Publication Date:
July 29, 2004
Filing Date:
September 11, 2002
Export Citation:
Assignee:
MARCONI COMM GMBH (DE)
MARTIN SIEGBERT (DE)
EBINGER JUERGEN (DE)
BEIS KONSTANTIN (DE)
MARTIN SIEGBERT (DE)
EBINGER JUERGEN (DE)
BEIS KONSTANTIN (DE)
International Classes:
H01P1/39; H01P11/00; (IPC1-7): H01P1/39
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