Patent ID: 8044715
Filing Date: 2011-10-25
Classification: H03F

Abstract:
1. A switching amplifier, comprising: a first set of switching devices configured to be coupled to a first voltage source and further configured to be coupled to a first output filter; a second set of switching devices configured to be coupled to a second voltage source and further configured to be coupled to a second output filter; a third set of switching devices configured to be coupled to a third voltage source; and a modulator including an input terminal configured to receive an input signal and further including respective output terminals coupled to individual ones of the first, second, and third sets of switching devices, wherein the modulator is further configured to control the first set of switching devices at a first sampling rate, to control the second set of switching devices at a second sampling rate, and to couple the first and second voltage sources to the first and second output filters, respectively, in accordance with the input signal, and wherein the first sampling rate is greater than the second sampling rate.