| 摘要 |
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 shunt function module, a plurality of frequency conversion function modules, a plurality of local oscillator signal modules, and a plurality of analog-to-digital conversion modules. The shunt 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 conversion function modules is used for performing frequency conversion on the satellite signals in the corresponding channels to form approximate 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 conversion 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. |
