Patent ID: 8660504

Claim:
A method for regulating the transmission power of a transmitter system ( 5 - 7 ) incorporated in an electronic module ( 1 ) of an automobile, wherein a transmitter system ( 5 - 7 ) is produced which comprises an amplification stage ( 5 ) having an adjustable amplification gain designed so that the transmission power extends in a predetermined range of operating powers, and in that: in a phase prior to the operation of the electronic module ( 1 ): a compensation table for the transmitter system ( 5 - 7 ) is established and stored, which is representative of the amplification gains to be applied to maintain a constant transmission power in a predetermined range of operating powers, according to the value of external parameters representative of the environment of the transmitter system ( 5 - 7 ), such that, in particular, the temperature in the electronic module ( 1 ), the electrical power supply voltage of said transmitter system, and the value of the offset of the amplification stage is measured and stored for the electronic module ( 1 ), and, during the operation of an electronic module ( 1 ), in order to obtain a given transmission power, the external parameters representative of the environment of the transmitter system ( 5 - 7 ) are periodically measured, and an amplification gain is determined and applied that is on the one hand designed to compensate the offset of the amplification stage ( 5 ), and on the other hand adjusted according to the environment by the use of the compensation table.