LOW NOISE PHASE LOCKED LOOPS
First Claim
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1. A circuit for generating an oscillating signal, comprising:
- a phase detector configured to output first and second signals responsive to a phase difference between two input signals, the phase detector being further configured to disable the first signal when outputting the second signal and to disable the second signal when outputting the first signal;
a voltage controlled oscillator (VCO) configured to generate an oscillating signal having a tunable frequency responsive to the first and second signals.
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Abstract
Aspects of circuits and methods for generating an oscillating signal are disclosed. The circuit includes a phase detector configured to output first and second signals responsive to a phase difference between two input signals. The phase detector is further configured to disable the first signal when outputting the second signal and to disable the second signal when outputting the first signal. The circuit further includes a voltage controlled oscillator (VCO) configured to generate an oscillating signal having a tunable frequency responsive to the first and second signals.
17 Citations
21 Claims
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1. A circuit for generating an oscillating signal, comprising:
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a phase detector configured to output first and second signals responsive to a phase difference between two input signals, the phase detector being further configured to disable the first signal when outputting the second signal and to disable the second signal when outputting the first signal; a voltage controlled oscillator (VCO) configured to generate an oscillating signal having a tunable frequency responsive to the first and second signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A circuit for generating an oscillating signal, comprising:
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means for detecting a phase difference between two input signals, wherein the means for detecting a phase difference is configured to output first and second signals responsive to the phase difference between two input signals, and wherein the means for detecting a phase difference is further configured to disable the first signal when outputting the second signal and to disable the second signal when outputting the first signal; means for generating an oscillating signal having a tunable frequency responsive to the first and second signals. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of generating an oscillating signal, comprising:
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detecting a phase difference between two input signals, the detecting comprising outputting first and second signals responsive to the phase difference between two input signals by disabling the first signal when outputting the second signal and to disabling the second signal when outputting the first signal; generating an oscillating signal having a tunable frequency responsive to the first and second signals. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification