Patent ID: 8164845

Claim:
A circuit configured to compensate asymmetry in a waveform of an input signal using a piecewise approximation of a saturation curve, the circuit comprising: a first circuit configured to output a first compensation for a first section of the saturation curve using a first function; a second circuit configured to output a second compensation for a second section of the saturation curve using a second function, wherein the second function is different than the first function, wherein the first compensation and the second compensation provide the piecewise approximation of a region of the saturation curve, and wherein the region includes at least the first section and the second section; an amplifier configured to amplify the input signal and to provide an amplified output; and a summer configured to add the amplified output and the first compensation and the second compensation, wherein the first circuit, the second circuit, and the amplifier are connected to the summer in parallel.