Receiver and corresponding process

A method of operating a receiver for digital signals, wherein the receiver includes:

• a radio frequency circuit with an input for receiving a modulated radio frequency signal, said radio frequency stage including a feedback loop for controlling an amplitude of said modulated radio frequency signal as a function of a comparison with a reference value, and
• a baseband circuit cascaded to said radio frequency circuit, said baseband circuit coupled with a baseband detector acting on said modulated radio frequency signal, said baseband circuit configured to generate a decodable baseband signal from a detection signal of said baseband detector and including an RC network,
• wherein the method comprises:
• controlling the amplitude of said modulated radio frequency signal as a function of an end value of the range of variation of said comparison, and
• selectively short-circuiting, upon receiver activation, a resistive component of said RC network.

A receiver for digital signals, comprising:

• a radio frequency circuit configured to receive a modulated radio frequency signal and including a variable gain amplifier configured to output an amplified modulated radio frequency signal,
• a baseband detector configured to generate a detection signal from said amplified modulated radio frequency signal,
• a feedback loop configured to receive the detection signal and control an amplification by the variable gain amplifier,
• wherein said feedback loop comprises:
• a comparator circuit configured to compare said detection signal to a reference to generate a comparison signal,
• a circuit configured to detect a range of variation of said comparison signal and generate a control signal comprising one of a minimum or maximum value of said comparison signal,
• a selector circuit having a first input configured to receive the comparison signal and a second input configured to receive said control signal, and
• a control circuit configured to control selection by the selector circuit of the comparison signal for a period of time and then control selection by the selector circuit of the control signal after said period of time, wherein an output of the selector circuit controls the amplification of the variable gain amplifier.

A receiver for digital signals, comprising:

• a radio frequency circuit configured to receive a modulated radio frequency signal and including a variable gain amplifier configured to output an amplified modulated radio frequency signal,
• a baseband detector configured to generate a detection signal from said amplified modulated radio frequency signal,
• a baseband circuit configured to generate a decodable baseband signal from said detection signal, wherein the baseband circuit includes an RC network, and
• a switching circuit configured to selectively short-circuit a resistive component of said RC network.