Patent ID: 8472557

Claim:
A transmitter comprising: a pulse encoder for producing pulses from the amplitude of a complex input signal to the transmitter; a compensation signal generator operatively coupled to the pulse encoder configured to cancel quantization noise caused by the pulse encoder to generate a first control signal; wherein a first input signal to the compensation signal generator comprises the complex input signal to the transmitter and a second input signal to the compensation signal generator comprises the pulses produced in the pulse encoder inclusive of quantization noise created in the pulse encoded multiplied with the phase part of the complex input signal; a first mixer or I/Q modulator operatively coupled to the pulse encoder for mixing an output of the pulse encoder with the phase of the complex input signal to the transmitter; a second mixer operatively coupled to the first mixer or I/Q modulator for converting the output from the first mixer or I/Q modulator to a desired frequency; an amplifier operatively coupled to the compensation signal generator and the second mixer and configured to provide an amplified signal, in which the first control signal controls a function of the amplifier, and an input signal to the amplifier comprises an output from the second mixer; and a band pass filter operatively coupled to an output of the amplifier, wherein the first control signal is configured by the compensation signal generator to control a maximum output amplitude of the amplifier or an impedance of an output matching network comprised in the amplifier such that the output of the band pass filter comprises a linear copy of the complex input signal to the transmitter.