Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katsuhiro Yasuda0
Hiroyuki Tsurumi0
Date of Patent
April 13, 2010
0Patent Application Number
121009230
Date Filed
April 10, 2008
0Patent Primary Examiner
Patent abstract
A power amplifier system including a power terminal, a ground terminal, an output terminal, a ripple terminal, a control terminal to which a control signal is supplied from outside, a power amplifier circuit connected between the power terminal and the ground terminal, a negative potential detection circuit connected to the output terminal, and a bias circuit which supplies a bias voltage to the power amplifier circuit, and a bias start-up circuit controlling the startup operation of the bias circuit.
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