An internal calibration system for a radio frequency (RF) transmitter
comprises a digital processing element to generate within a radio
frequency (RF) transmitter test points at which an output of the RF
transmitter is measured, an RF detector to measure the radio frequency
output of the RF transmitter at the test points, the digital processing
element also determining transmitter impairments by analyzing the
measured radio frequency output, and compensation circuitry to compensate
the RF transmitter for the measured impairments.