Patent ID: 6600909
Filing Date: 2003-07-29
Classification: G01S

Abstract:
A device for reception of signals of satellite radio navigation systems comprising:an input unit having an input, which is a signal input of the device, and an output; a first signal frequency converter having the output of the input unit connected thereto, said first signal frequency converter comprising a first amplifier, whose input is an input of the first frequency converter, a mixer and a second amplifier connected in series; a second signal frequency converter comprising a first channel and a second channel, wherein the output of the second amplifier of the first signal frequency converter is connected to the first channel and the second channel of the second signal frequency converter, the first channel and the second channel each comprising a filter, whose input is an input of the corresponding channel of the second signal frequency converter, and a mixer; and a first unit which produces signals of a clock and heterodyne frequencies and has an output of a signal of a first heterodyne frequency connected to a reference input of the mixer of the first signal frequency converter, and an output of a signal of a second heterodyne frequency connected to a reference input of the mixer of the first channel of the second signal frequency converter, wherein outputs of the first and second channels of the second signal frequency converter and output of the signal of the clock frequency are outputs of the device, the first unit comprises: a second unit, the second unit producing the signals of the first heterodyne frequency; and a first and a second frequency dividers connected to an output of the second unit, the first and second frequency dividers being connected in series and frequency dividing by eight and by 2N, respectively, where N=1, 2, 3, outputs of the first and second frequency dividers making up, respectively, the output for the signal of the second heterodyne frequency and the output for the signal of the clock frequency of the first unit producing the signals of the clock and heterodyne frequencies, the signal output of the second heterodyne frequency is connected to a reference input of the mixer of the second channel of the second signal frequency converter, and in each of the first and second channels of the second signal frequency converter the output of the mixer is connected to the output of the channel through a controlled-gain amplifier and a threshold device connected in series.