Patent ID: 8630151

Claim:
A radio-synchronous signal receiver for adjusting a time base, said receiver including an antenna for receiving radio-synchronous signals, at least one low noise amplifier for amplifying and filtering the signals picked up by the antenna, a frequency conversion unit for converting the frequency of the filtered and amplified incoming signals from the low noise amplifier, and a processing unit receiving data signals from the frequency conversion unit for adjusting the time base, said frequency conversion unit including: a local oscillator stage for supplying oscillating signals at an adapted frequency; at least one mixer unit for mixing the filtered and amplified incoming signals with the oscillating signals supplied by the local oscillator stage, so as to generate intermediate signals whose frequency is equal to the difference between the oscillating signal frequency and a carrier frequency of the incoming signals; a bandpass filter for filtering the intermediate signals and a demodulator receiving the filtered intermediate signals and supplying the data signals at output, wherein the local oscillator stage is automatically configured by a control signal from the processing unit so that the frequency of the oscillating signals from the local oscillator stage is adapted in accordance with the frequency of the incoming radio-synchronous signals such that the intermediate signal frequency is within the bandpass filter frequency band, and wherein the local oscillator stage is a frequency synthesiser, which includes an oscillator with a timepiece quartz for supplying a reference signal to a phase and frequency detector in a phase lock loop, a voltage controlled oscillator receiving signals filtered by a low-pass filter originating from the phase and frequency detector, so as to supply the oscillating signals, and a multi-mode divider for dividing the oscillating signal frequency and supplying divided signals to the phase and frequency detector.