INTEGRATED CIRCUIT HAVING A MULTIPLYING INJECTION-LOCKED OSCILLATOR
First Claim
1. A circuit, comprising:
- a first injection-locked oscillator to generate a first set of output signals, the first injection-locked oscillator having a first set of injection points, wherein each injection point in the first set of injection points is capable of receiving a corresponding input signal in a set of input signals; and
a second injection-locked oscillator to generate a second set of output signals, the second injection-locked oscillator having a second set of injection points, wherein each injection point in the second set of injection points is capable of receiving a corresponding output signal in the first set of output signals.
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Abstract
Methods and apparatuses featuring a multiplying injection-locked oscillator are described. Some embodiments include a pulse-generator-and-injector and one or more injection-locked oscillators. The outputs of the pulse-generator-and-injector can be injected into corresponding injection points of an injection-locked oscillator. In embodiments that include multiple injection-locked oscillators, the outputs of each injection-locked oscillator can be injected into the corresponding injection points of the next injection-locked oscillator. Some embodiments reduce deterministic jitter by dynamically modifying the loop length of an injection-locked oscillator, and/or by using a duty cycle corrector, and/or by multiplexing/blending the outputs from multiple delay elements of an injection-locked oscillator.
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Citations
18 Claims
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1. A circuit, comprising:
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a first injection-locked oscillator to generate a first set of output signals, the first injection-locked oscillator having a first set of injection points, wherein each injection point in the first set of injection points is capable of receiving a corresponding input signal in a set of input signals; and a second injection-locked oscillator to generate a second set of output signals, the second injection-locked oscillator having a second set of injection points, wherein each injection point in the second set of injection points is capable of receiving a corresponding output signal in the first set of output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. (canceled)
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9. (canceled)
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10. A circuit, comprising:
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an injection-locked oscillator to generate an output signal having a deterministic jitter pattern, the injection-locked oscillator having a set of injection points, each injection point capable of receiving an input signal in a set of input signals; and a duty cycle corrector (DCC) to adjust pulse widths of the output signal so that the width of the narrowest pulse in the deterministic jitter pattern is substantially equal to the width of the second narrowest pulse in the deterministic jitter pattern. - View Dependent Claims (11, 12, 13)
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14. An injection-locked oscillator, comprising:
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a chain of delay elements, at least one delay element capable of receiving an injection signal, at least one delay element capable of receiving an output signal of a multiplexer/blender, and at least two delay elements capable of providing input signals to the multiplexer/blender; and the multiplexer/blender capable of varying a loop delay of the injection-locked oscillator. - View Dependent Claims (15, 16, 17)
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18-21. -21. (canceled)
Specification