Patent ID: 7002410

Claim:
A circuit for linearizing an input signal x(t), comprising: a main circuit that receives the input signal with a main transfer function of approximately H1 and outputs a main signal output; a nonlinear auxiliary circuit that receives the input signal and has a nonlinear auxiliary transfer function of approximately H2 and outputs a nonlinear auxiliary signal output, wherein H 1 (X)=a 1 X+a 3 X 3 and H 2 (X)=b 1 X+b 3 X 3 and X is the transform of x(t), a 1 xa 3 <0, b 1 xb 3 <0, a 1 −a 3 is approximately a 1 , and b 1 −b 3 is approximately 0; and a combiner coupled to said main circuit and said nonlinear auxiliary circuit that combines said main signal and said auxiliary signal to yield an output signal.