An FBAR Driven −261dB FOM Fractional-N PLL

A 1mW −261dB FOM PLL with 91fs jitter is presented that combines a low-noise, high-frequency FBAR reference with the unity-gain harmonic-mixing (HM) PLL to minimize reference noise gain and avoid entirely the amplification of sigma-delta modulator quantization noise and fractional spurs, which, in t...

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Bibliographic Details
Main Authors: Yang, Dihang, Murphy, David, Darabi, Hooman, Behzad, Arya, Ruby, Richard, Parker, Reed
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
FBAR oscillator
Fractional-N PLL
Frequency Synthesizer
Jitter
Quantization (signal)
Radiofrequency integrated circuits
Sigma-delta modulation
Signal generators
Voltage-controlled oscillators
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Description
Summary:A 1mW −261dB FOM PLL with 91fs jitter is presented that combines a low-noise, high-frequency FBAR reference with the unity-gain harmonic-mixing (HM) PLL to minimize reference noise gain and avoid entirely the amplification of sigma-delta modulator quantization noise and fractional spurs, which, in turn, allows for a substantially larger loop bandwidth to suppress the VCO noise and speed settling.
ISSN:2375-0995
DOI:10.1109/RFIC51843.2021.9490409