Patent ID: 11967966
Assignee: ZHEJIANG UNIVERSITY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The circuit for expanding the lock range of injection-locked oscillators according to claim 1, wherein the N self-samplers separately sample the outputs of the N injection-locked oscillators by using the falling edge of the pulse reference signal; according to the self-alignment of injection locking, the pulse reference signal shapes edges of the outputs of the N injection-locked oscillators; when free-running frequencies of the N injection-locked oscillators are lower than the frequency of the pulse reference signal, the pulse reference signal is self-aligned to rising edges of the outputs of the N injection-locked oscillators, and a high voltage is obtained by means of sampling; when the free-running frequencies are higher than the frequency of the pulse reference signal, the pulse reference signal is self-aligned to falling edges of the outputs of the N injection-locked oscillators, and a low voltage is obtained by means of sampling; if the N injection-locked oscillators are unlocked, the pulse reference signal cannot shape the edges of the outputs of the N injection-locked oscillators, and the sampling results vary between the high voltage and the low voltage.