Patent ID: 7573329
Filing Date: 2009-08-11
Classification: H03F

Abstract:
1. A discrete amplifier for canceling at least one distortion component at the output of the discrete amplifier comprising: a. a first stage having at least a first branch and a second branch in parallel with one another, wherein each of said first and second branches is formed of one or more transistor legs having one or more unit cells in parallel with one another; b. a second stage having at least a third branch and a fourth branch in parallel with one another, wherein each of said third and fourth branches is formed of one or more transistor legs having one or more unit cells in parallel with one another; c. a first biasing circuit having a first impedance and a first biasing level, said first biasing circuit being operatively connected to said first stage first branch for biasing said first branch into a first mode of operation; d. a second biasing circuit having a second impedance and a second biasing level, said second biasing circuit being operatively connected to said first stage second branch for biasing said second branch into a second mode of operation; e. a third biasing circuit having a third impedance and a third biasing level, said third biasing circuit being operatively connected to said second stage third branch for biasing said third branch into a third mode of operation; f. a fourth biasing circuit having a fourth impedance and a fourth biasing level, said fourth biasing circuit being operatively connected to said second stage fourth branch for biasing said fourth branch into a fourth mode of operation, wherein at least one of