Patent ID: 6324383
Filing Date: 2001-11-27
Classification: H03F,H04B

Abstract:
Apparatus for reducing distortion in a transmitter radio signal suitable for use in an aviation radio transmitter comprising a component defining a first nonlinear transfer function, said transmitter transmitting within a predetermined range of frequencies, said apparatus comprising in combination:a source of an input signal containing information to be transmitted;a source of multiplying factors;a signal converter comprising an attenuator arranged to perform a multiplication function with said multiplying factors on said input signal to generate a second signal, said multiplication function containing a second nonlinear transfer function, said multiplying factors defining a third nonlinear transfer function related to said first nonlinear transfer function and a fourth nonlinear transfer function related to said second nonlinear transfer function so that said input signal is modified to adjust for said first nonlinear transfer function and said second nonlinear transfer function.