Nxp B.v.

Fernand Courtois

Yann Le Guillou

Olivier Jamin

Luca Lococo

Timothy John Ridgers

Amandine Lesellier

An RF receiver comprising: an amplifier configured to receive an RF signal over an input bandwidth and to provide an amplified RF signal; an equalizer circuit connected to the amplifier to receive the amplified RF signal and configured to provide an equalized RF signal; a converter module connected to the equalizer circuit and comprising an analog to digital converter configured to convert the equalized RF signal to a digital signal; and a digital signal processing module connected to the receiver module and configured to process the digital signal to provide a plurality of channels at an output of the receiver, wherein the digital signal processing module is further configured to process the digital signal to determine a measure of tilt in the RF signal across the input bandwidth and is connected to the equalizer circuit to provide a control signal for adjusting the measured tilt.

RF receiver

A radio receiver comprises an input () for a modulated radio frequency signal, a frequency down converter () coupled to the input, the frequency down converter including quadrature mixers () for demodulating a received modulated radio frequency signal using a local oscillator signal. An analogue-to-digital converter () is coupled to receive demodulated signals from the mixing means. The analogue-to-digital converter, which may comprise a continuous time sigma delta converter, has an input for a sampling clock frequency (f s). A voltage controlled oscillator () provides the local oscillator signal and supplies a frequency divider () used to provide the sampling clock frequency. The dividing ratio (1/A) of the frequency divider is variable in response to variations in the strength of an 15 output signal from the digital-to-frequency converter and the variations in the frequency of the sampling clock frequency vary the gain of the analogue-to-frequency converter thereby providing automatic gain control.

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Saint-Contest, France

Fernand Courtois