Blue Filament Law, PLLC
Radio frequency circuit structure for implementing function of converting GNSS satellite signal into baseband signal
The present invention relates to a radio frequency circuit structure for implementing a function of converting a satellite signal of a global navigation satellite system into a baseband signal. The radio frequency circuit structure comprises a channel dividing function module, a plurality of frequency converting function modules, a plurality of local oscillator signal modules, and a plurality of analog-to-digital convertor modules. The channel dividing function module is used for dividing a satellite signal of the global navigation satellite system received by an antenna into satellite signals in a plurality of channels. Each of the frequency converting function modules is used for performing frequency conversion on the satellite signals in the corresponding channels to form near zero-frequency signals. Each of the local oscillator signal module is used for generating a local oscillator signal and outputting the local oscillator signal to the frequency converting function module. By using the radio frequency circuit structure for implementing a function of converting a satellite signal of a global navigation satellite system into a baseband signal, frequency conversion and follow-up signal processing can be performed on the satellite signals in each frequency band separately, the signal quality insured, a sufficient signal to noise ratio is provided for a baseband processing circuit, thereby providing a wider application range.
COMNAV TECHNOLOGY LTD.
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Yang Yongquan Jie
Song Wang Liu