Patent ID: 9739889
Date: 2017-08-22
CPC Classifications: G01S

Claim:
1. A method of dividing a satellite signal into eight frequency points for a baseband of a satellite navigation receiver, the method comprising the following steps: amplifying a satellite signal received by an antenna; dividing the amplified satellite signal into radio frequency signals that include eight frequency points in total, GPSL1, GPSL2, GPSL5, BDB1, BDB2, BDB3, GLNL1, and GLNL2, by a power divider circuit; conducting a frequency mixing processing on five signals GPSL2, GPSL5, BDB2, BDB3, and GLNL2 to obtain a signal of 1550 MHz˜1611 MHz by a low local oscillator circuit, frequency-balancing the five signals GPSL2, GPSL5, BDB2, BDB3 and GLNL2 with three unmixed signals GPSL1, BDB1 and GLNL1, and filtering the radio frequency signals that include eight frequency points in total, which include five frequency-mixed signals, GPSL2, GPSL5, BDB2, BDB3, and GLNL2, and the three unmixed signals, GPSL1, BDB1, and GLNL1; and down-converting and A/D converting filtered eight-frequency-point radio frequency signals, and then outputting the signals to the baseband for baseband signal processing, wherein the steps are performed without a plurality of frequency mixer circuits and a plurality of input amplifier circuits.