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US Patent 7907030 Integrated circulators sharing a continuous circuit

Patent 7907030 was granted and assigned to EMS Technologies on March, 2011 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Current Assignee
‌
EMS Technologies
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7907030
Patent Inventor Names
David Popelka2
Todd Vaughn2
John D. Voss2
Date of Patent
March 15, 2011
Patent Application Number
11314160
Date Filed
December 19, 2005
Patent Citations Received
‌
US Patent 12113264 Fabrication of surface mount microstrip circulators using a ferrite and ceramic dielectric assembly substrate
1
Patent Primary Examiner
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Stephen E. Jones
Patent abstract

The present invention is directed to a circuit assembly that includes an integrated circulator assembly. The circuit assembly has a first substrate, which contains a continuous circuit trace that includes a circulator component from the circulator assembly and at least one electrical component from the circuit assembly. A second substrate is disposed beneath the first substrate and includes a cladding on one surface. The second substrate contains an aperture that accepts a ferrite element, which is axially aligned with the circulator component of the circuit trace. A conductive material is placed across the ferrite element so that it forms a continuous ground plane with the cladding, which is common to the entire circuit trace. The circulator assembly also contains a magnet bonded to the ferrite element. The circulator assembly may also include a yoke disposed below the magnet to shield the circulator from external magnetic fields.

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