| 摘要 |
PROBLEM TO BE SOLVED: To eliminate phase noise generated by a PLL circuit of a digital receiver. SOLUTION: The digital receiver includes a mixer stage 2 having a phase locked loop(PLL) circuit 4 receiving a carrier, delivering an intermediate frequency signal to a demodulation stage 12 and generating a signal at a prescribed frequency. A phase noise digital correction stage 14 is provided to the digital receiver to branch a noise signal generated by the PLL circuit 4 in the mixer stage 2 by a tap so as to compensate the noise in the demodulation stage 12. |
