Patent ID: 7554391
Filing Date: 2009-06-30
Classification: H03F

Abstract:
1. An amplifier comprising: a first modulation circuit having an input for receiving a first input signal, and an output for providing a first modulated output signal, the first modulated output signal corresponding to the first input signal; a second modulation circuit having an input for receiving a second input signal, and an output for providing a second modulated output signal, the second modulated output signal corresponding to the second input signal; a third modulation circuit having an input for receiving a third input signal, and an output for providing a third modulated output signal, the third modulated output signal corresponding to the third input signal and for providing a virtual ground; a first amplifier circuit coupled to the outputs of the first and third modulation circuits, the first amplifier circuit for driving a first load; and a second amplifier circuit coupled to the outputs of the second and third modulation circuits, the second amplifier circuit for driving a second load.