US Patent 6844789 Low temperature co-fired ceramic (LTCC) circulator
Patent 6844789 was granted and assigned to Raytheon on January, 2005 by the United States Patent and Trademark Office.
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Patent abstract
A radio frequency (RF) circulator includes a low temperature co-fired ceramic (LTCC) substrate and a ferrite structure disposed in the LTCC substrate. The circulator also includes first, second and third transmission lines disposed in the LTCC substrate and coupled between the ferrite disk and first, second and third ports of the circulator. The ferrite structure embedded in the LTCC substrate is exposed to an appropriate direct current (DC) magnetic field, to provide the circulator as an integrated LTCC substrate circulator.
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Patent Inventor Names
Joseph S. Pleva0
Landon Rowland0
Paul Setzco0
Robert B. Lombardi0
Date of Patent
January 18, 2005
0Patent Application Number
102346720
Date Filed
September 4, 2002
0Patent Primary Examiner
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US Patent 6844789 Low temperature co-fired ceramic (LTCC) circulator
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