Patent ID: 9559645
Date: 2017-01-31
CPC Classifications: H03F,H04R

Claim:
1. An amplifier for amplifying an input signal to an output signal, wherein the amplifier comprises: a signal path comprising: a negative feedback connection that is in communication with the signal path such that the signal path and the negative feedback connection form a loop with a loop gain, wherein the negative feedback connection is suitable for feeding back the output signal generated by the switched output stage to an input of the amplifier, wherein the fed-back output signal is combined with the input signal; and wherein the compensator is suitable for compensating, at least partially, for changes in the loop gain resulting from a variation in the supply voltage, wherein the compensator is suitable for amplifying or reducing the signal in the signal path of the loop in dependence of the supply voltage in such a way as to counteract a change in loop gain based on the variation in the supply voltage, and wherein the compensator is suitable for amplifying or reducing the signal on the modulator negative feedback connection in dependence of the supply voltage in such a way as to counteract a change in loop gain based on the variation in the supply voltage.