Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 8, 2009
Patent Application Number
12178034
Date Filed
July 23, 2008
Patent Primary Examiner
Patent abstract
A gm compensation current source controls current that runs through a current source transistor, source-grounded transistors that determine a gain so that mutual conductance gm of the source-grounded transistors is compensated and the gain is compensated. A 1/r current source runs current inversely proportional to variation of load resistors of an amplifier so that gate bias points of gate-grounded transistors that are connected to the source-grounded transistors remain constant, and deterioration of linearity at a drain terminal of a gate-grounded transistor is suppressed.
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