| 摘要 |
PROBLEM TO BE SOLVED: To provide a quantization method for a digital phase-locked loop circuit that provides a quantized signal having small errors, even without the need for a high-speed clock signal. SOLUTION: Phase difference signals Vp1 , Vp2 , outputted from a phase comparator circuit 1, are fed to 1st and 2nd quantization circuits 2, 3, the 1st and 2nd quantization circuits 2, 3 quantize the phase difference signals Vp1 , Vp2 by using quantization clocks Φ1, Φ2, whose phases are deviated by 180 deg. by a delay circuit 7 and an adder 4 sums signals outputted from the 1st and 2nd quantization circuits 2, 3. |
