Patent ID: 8565699

Claim:
A transmitter, comprising: a Power Amplifier (PA), which is controlled by a PA control voltage and which is operative to amplify a Radio Frequency (RF) signal and has input and output amplifier terminals; an antenna; at least one passive component, which has an input component terminal coupled to the output amplifier terminal of the PA and an output component terminal coupled to the antenna, and which has a variable insertion loss that varies depending on an operating condition of the signal passing the at least one passive component; a memory, which is configured to store pre-measured calibration data that is indicative of the insertion loss of the at least one passive component as a function of the operating condition; and control circuitry, which is configured to assess the variable insertion loss of the at least one passive component at a target output power level by querying the calibration data stored in the memory, to determine, based on the assessed variable insertion loss, an interim power level at the output amplifier terminal that causes the signal at the output component terminal to have the target output power level, to determine, based on the interim power level at the output amplifier terminal, a given PA control voltage that makes the interim power level producible by the PA, so that the signal at the output component terminal has the target output power level, and to apply the given PA control voltage to the PA.