Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Xin Jiang0
Date of Patent
May 11, 2010
0Patent Application Number
120117240
Date Filed
January 29, 2008
0Patent Primary Examiner
Patent abstract
An improved spiral coupler including a plurality of parallel, coextensive conductive strips disposed in a planar spiral path, including a first strip having an input port and a direct or through port, a second strip having a coupler port and an isolated port and a first cross-over connection for bridging the strips from the inside to the outside of the spiral path to provide all four the ports external access to the spiral path.
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