Patent ID: 7061323
Filing Date: 2006-06-13
Classification: H03F

Abstract:
1. An apparatus for controlling operation of an amplifier device when supply voltage provided to said amplifier device varies at an input voltage supply locus; said amplifier device having an operating parameter varying in generally direct proportion with said supply voltage; the apparatus comprising: (a) a reference parameter supply; said reference parameter supply providing a reference parameter substantially similar to said operating parameter; said reference parameter being substantially independent of variance of said supply voltage; (b) a modeling circuit coupled with said input voltage supply locus; said modeling circuit substantially modeling said amplifier device; (c) a comparing circuit coupled with said modeling circuit and with said reference parameter supply; said comparing circuit receiving a model operating parameter from said modeling circuit; said model operating parameter substantially modeling said operating parameter; said comparing circuit receiving said reference parameter from said reference parameter supply; said comparing circuit comparing said model operating parameter with said reference parameter; said comparing circuit providing a control signal to said modeling circuit and to said amplifier device in response to said comparing; said control signal altering operation of said modeling circuit and said amplifier device; said altering reducing variance of a relation between said reference parameter and said model operating parameter from a predetermined relationship.