Patent ID: 7606502
Filing Date: 2009-10-20
Classification: H04B

Abstract:
1. A distortion amplifier for generating a selectively distorted RF signal, including an RF amplifier and a distortion circuit; the distortion circuit consists of: a first signal path, for conducting both RF and DC bias current, including at least one nonlinear device; a second signal path, for conducting both RF and DC bias current, coupled in parallel to said first signal path with respect to RF current, coupled in series to said first signal path with respect to DC bias current, and including at least one resistance means; and a DC bias current input for providing said DC bias current to said first and second paths wherein approximately one-third to one-half of the current output from the RF amplifier flows through said first path, and wherein the nonlinear device in the first signal path is the sole nonlinear device affecting the level of distortion output by said distortion circuit.