Patent ID: 8290450

Claim:
A system comprising: a test tone generator configured to generate a test tone; a transmitter configured to up-convert the test tone using quadrature signals to produce an up-converted test tone; and an envelope detection path, comprising: an envelope detector configure to detect an envelope signal of the up-converted test tone; and a calibration control module configured to: monitor the envelope signal by determining a strength of a first spectral component in the envelope signal at an odd harmonic frequency of the test tone and a strength of a second spectral component in the envelope signal at an even harmonic frequency of the test tone; and adjust one or more of a plurality of compensation parameters in the transmitter to reduce a beating in the envelope signal based on the strength of the second spectral component after adjusting the one or more compensation parameters in the transmitter to reduce the beating in the envelope signal based on the strength of the first spectral component.