Polar Transmitter with FeedThrough Compensation

A circuit comprising:

• a polar transmitter configured to generate a radio frequency output based on an amplitude signal component received at an amplitude input and a phase signal component received at a phase input, the polar transmitter including an amplifier to combine amplitude and phase signal components;
• a processor coupled to the polar transmitter, the processor configured to provide the amplitude signal component to the amplitude input and to provide the phase signal component to the phase input, the processor comprising:
• a digital modulation circuit configured to generate a modulated digital signal including an in-phase signal component and a quadrature signal component for conversion to the amplitude signal component and the phase signal component;
• and
• a correction circuit configured to calculate a complex digital offset and apply the complex digital offset to correct the amplitude signal component and the phase signal component for local oscillator feedthrough of the amplifier, the complex digital offset includes an in-phase offset correction factor and a quadrature offset correction factor.