Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 6, 2007
Patent Application Number
11057304
Date Filed
February 11, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A variable gain amplifier is disclosed where the gain of the amplifier is controlled by a variable emitter resistor that is responsive to a control signal. The variable resistor includes a resistor connected between the collector and emitter of a control transistor. A control signal applied to the base of the control transistor varies the gain of the amplifier from a minimum gain when the control transistor is cut-off to a maximum gain when the control transistor is saturated.
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