Patent ID: 7439786
Filing Date: 2008-10-21
Classification: H03F

Abstract:
1. A power amplification circuit, comprising; a first clock signal generating portion operable to produce a first clock signal having a first frequency; a second clock signal generating portion operable to produce a second clock signal having a second frequency different from the first frequency; a first pulse width modulation signal generating portion operable to produce from a first input signal a first pulse width modulation signal using the first clock signal; a second pulse width modulation signal generating portion operable to produce from a second input signal a second pulse width modulation signal using the second clock signal; a first switching amplifier operable to perform a switching operation in response to the first pulse width modulation signal to subject the first pulse width modulation signal to power amplification to produce a first output signal, and to supply the first output signal to a first circuit load; and a second switching amplifier operable to perform a switching operation in response to the second pulse width modulation signal to subject the second pulse width modulation signal to power amplification to produce a second output signal, and to supply the second output signal to a second circuit load.