CIRCUIT AND METHOD FOR WIDENING LOCKING RANGE OF INJECTION-LOCKED OSCILLATOR

WIPO Patent Application WO/2023/060847

A1

Provided in the present invention are a circuit and method for widening the locking range of an injection-locked oscillator. The circuit comprises: N injection-locked oscillators and a locking detector, wherein the locking detector comprises: an alignment monitor, a clock selector and N self-samplers; pulse reference signals are input into the N injection-locked oscillators; an output of each injection-locked oscillator is connected to the clock selector and a corresponding self-sampler; the self-samplers sample the outputs of the N injection-locked oscillators into which the pulse reference signals are input, and output sampling results to the alignment monitor; the alignment monitor monitors the sampling results, determines locking conditions of the injection-locked oscillators and turns off an unlocked oscillator; and the clock selector selects a locked oscillator, and transmits, to a system, a clock signal that is output by the oscillator. In the present invention, an external debugging circuit is not required, such that the locking range of an injection-locked oscillator is widened without increasing the power consumption, and the determination and selection of injection locking are realized in a full-automatic manner.

CHANG ZIYI (CN)
ZHAO BO (CN)

PCT/CN2022/083900

April 20, 2023

March 30, 2022

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UNIV ZHEJIANG (CN)

H03L7/10

CN114124086A	2022-03-01
CN104202042A	2014-12-10
CN102332915A	2012-01-25
CN110635801A	2019-12-31
US20140241442A1	2014-08-28

HANGZHOU ZHEKE PATENT AGENCY (GENERAL PARTNERSHIP) (CN)

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