US 2017/0366195 A1 · INJECTION-LOCKED OSCILLATOR AND SEMICONDUCTOR DEVICE INCLUDING THE SAME

Abstract

An injection-locked oscillator includes an oscillator and an injection circuit. The oscillator includes a first oscillation node through which a first oscillation signal is output and a second oscillation node through which a second oscillation signal is output, the second oscillation signal having a phase opposite to that of the first oscillation signal. The injection circuit provides an injection current between the first oscillation node and the second oscillation node according to a reference signal. The injection circuit includes a charging element configured to be charged or discharged in response to a reference signal and to provide the injection current between the first oscillation node and the second oscillation node.

Claims20

Dependent claims

An injection-locked oscillator comprising:

an oscillator including a first oscillation node through which a first oscillation signal is output and a second oscillation node through which a second oscillation signal is output, the second oscillation signal having a phase opposite to a phase of the first oscillation signal;
and
an injection circuit configured to provide an injection current between the first oscillation node and the second oscillation node according to a reference signal,
wherein the injection circuit includes a charging element configured to be charged or discharged in response to the reference signal and to provide the injection current between the first oscillation node and the second oscillation node.

1 more element

A semiconductor device comprising:

an injection-locked oscillator configured to provide an injection current according to an injection signal induced from a reference signal, and to provide an output signal, a frequency of the output signal being controlled by a first bias control signal;
a pulse width comparator configured to compare, during a first feedback control operation, a first pulse width of the output signal during a first period when the injection current is provided with a second pulse width of the output signal during a second period when the injection current is absent, and to output a pulse width comparison signal;
and
a first filter configured to output the first bias control signal according to the pulse width comparison signal output from the pulse width comparator during the first feedback control operation.

1 more element

Dependencies are inferred from the claim text.

Injection-locked oscillator and semiconductor device including the same

Life of this patent

Injection-locked oscillator and semiconductor device including the same

Life of this patent

Abstract

Claims20