WIRELESS SIGNAL AMPLIFICATION SYSTEM AND A TELEVISION SIGNAL DECODER COMPRISING ONE SUCH SYSTEM

摘要

A wireless signal amplification system including amplification apparatus ( 6 ) consisting of numerous different amplifiers ( 6 ₁ to 6 _n) which are distributed in an analogue processing chain ( 4 ). Also, a converter ( 12 ) for converting analogue signals into digital signals which, at input, are connected to the outlet of the analogue processing chain ( 4 ) and, at output, are connected to at least the gain control circuit ( 16 ) of the amplification apparatus ( 6 ) according to a value that is representative of a characteristic of the wireless signal ( 1 ). In this way, sampling of the wireless signal ( 1 ) by the converter ( 12 ) is optimized. The gain control circuit ( 16 ) establishes an average gain control signal ( 18 ), and also has, for each of the amplifiers ( 6 ₁ to 6 _n), a device for calculating an individual gain control signal ( 20 _i to 20 _n) according to a transfer function (H₁ to H_n) which is specific to each amplifier and which is applied to the average gain control signal.