High Gain Detector Techniques for Low Bandwidth Low Noise Phase-Locked Loops
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United States of America Patent
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May 2, 2024
app pub date -
Jan 4, 2024
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Jan 12, 2021
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Abstract
In described examples, an apparatus comprises a multi-modulus divider (MMD) having a divider input, a divisor input, and a divider output. The apparatus also comprises a phase detector (PD) having a first clock input, a second clock input, and a PD output, the second clock input coupled to the divider output. The apparatus also comprises a phase to digital converter (P2DC) having a P2DC input and a P2DC output, the P2DC input coupled to the PD output. The apparatus further comprises a delta-sigma modulator having a third clock input, a modulator input, and a modulator output, the third clock input coupled to the divider output, the modulator input coupled to the P2DC output, and the modulator output coupled to the divisor input.
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