Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masahiro Umewaka0
Hiroya Yamamoto0
Keiji Morijiri0
Keitaro Sekine0
Akira Hyogo0
Date of Patent
January 30, 2007
0Patent Application Number
107634410
Date Filed
January 23, 2004
0Patent Primary Examiner
Patent abstract
A tuning circuit having an amplitude-varying function is disclosed that comprises a coil, a capacitor, and a resistance-adjusting element connected in parallel to the coil and the capacitor for varying resistance at time of resonance of the tuning circuit, wherein the amplitude of an output signal of the tuning circuit is varied by varying the resistance with the resistance-adjusting element.
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