Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 29, 2008
Patent Application Number
11318408
Date Filed
December 22, 2005
Patent Primary Examiner
Patent abstract
An antenna unit comprises a hollow cylindrical member obtained by forming a flexible insulating film member into a hollow cylinder and an antenna pattern composed of four conductors formed on an inner peripheral surface of the hollow cylindrical member. A phase shifter pattern is formed on the inner peripheral surface of the hollow cylindrical member so as to be electrically connected to the antenna pattern. The antenna unit further comprises a hollow cylindrical cover case covering the hollow cylindrical member and a shield member provided so as to cover the phase shifter pattern.
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