| 摘要 |
PURPOSE:To store the frequency of an input signal with fidelity more than ever, by switching the phase shift quantity of every input of a signal to a delay synthesis loop, and varying the phaseteristic of the delay synthesis loop. CONSTITUTION:A 180 deg. distributor 8 distributes the phase of the signal in the delay synthesis loop that is the signal from a delay line 5 to two signals having the phase difference of 180 deg. respectively. By varying the phase of the signal in the delay synthesis loop by 180 deg., a frequency possible to be synthesized without generating the phase difference at the consecutive part of the signal is moved by 1/tau of the inverse of a loop delay time (tau). In such a way, it is possible to prevent the phase at the consecutive part of the signal in the delay synthesis loop uniformly from being formed discontinuously. |
