Acoustic detection of bearing faults through fractional harmonics lock-in amplification
M del Rosario Bautista-Morales… - Mechanical Systems and …, 2023 - Elsevier
Bearing failure detection in induction motors is vital to prevent breakdowns and dead times
in industrial processes. Non-invasive detection of bearing faults can be performed by …
in industrial processes. Non-invasive detection of bearing faults can be performed by …
Robust focus ranging
HN Nair, CV Stewart - … 1992 IEEE Computer Society Conference on …, 1992 - computer.org
A new technique is proposed to dramatically reduce the impact of fractional spurs in sigma-
delta (ΣΔ) fractional-N synthesisers. The key innovation is the introduction in the bitstream …
delta (ΣΔ) fractional-N synthesisers. The key innovation is the introduction in the bitstream …
Fractional-N frequency synthesis: overview and practical aspects with FIR-embedded design
This paper gives an overview of fractional-N phase-locked loops (PLLs) with practical
design perspectives focusing on a ${\Delta}{\Sigma} $ modulation technique and a finite …
design perspectives focusing on a ${\Delta}{\Sigma} $ modulation technique and a finite …
A Multi-Frequency Multi-Standard Wideband Fractional- PLL With Adaptive Phase-Noise Cancellation for Low-Power Short-Range Standards
Y Zhang, JH Mueller, B Mohr, L Liao… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
This paper presents a wideband fractional-N frequency synthesizer design with a low-effort
adaptive calibration technique for ΣΔ quantization noise cancellation. After adopting from the …
adaptive calibration technique for ΣΔ quantization noise cancellation. After adopting from the …
A Fractional- PLL With Space–Time Averaging for Quantization Noise Reduction
This article presents a space–time averaging technique that can realize instantaneous
fractional frequency division, and thus, can significantly reduce the quantization error in a …
fractional frequency division, and thus, can significantly reduce the quantization error in a …
A Single-Chip 125-MHz to 32-GHz Signal Source in 0.18-m SiGe BiCMOS
SA Yu, Y Baeyens, J Weiner, UV Koc… - IEEE Journal of Solid …, 2011 - ieeexplore.ieee.org
We present a 4.4-mm 2 single-chip synthesized signal source with 125 MHz to 32 GHz
continuous frequency coverage with a minimum frequency step smaller than 10 Hz. The chip …
continuous frequency coverage with a minimum frequency step smaller than 10 Hz. The chip …
A wideband oscillator exploiting multiple resonances in lithium niobate MEMS resonator
This article presents a comprehensive guide to codesign lithium niobate (LiNbO 3) lateral
overtone bulk acoustic resonators (LOBARs) and voltage-controlled oscillators (VCOs) using …
overtone bulk acoustic resonators (LOBARs) and voltage-controlled oscillators (VCOs) using …
Analysis of Wandering Spur Patterns in a Fractional- Frequency Synthesizer With a MASH-Based Divider Controller
D Mai, MP Kennedy - … Transactions on Circuits and Systems I …, 2020 - ieeexplore.ieee.org
The Multi-stAge noise SHaping Digital Delta-Sigma Modulator (MASH DDSM), which is
commonly used as a divider controller in a fractional-N frequency synthesizer, can produce …
commonly used as a divider controller in a fractional-N frequency synthesizer, can produce …
Spur immunity in MASH-based fractional-N CP-PLLs with polynomial nonlinearities
V Mazzaro, MP Kennedy - … on Circuits and Systems I: Regular …, 2021 - ieeexplore.ieee.org
Spurious tones appear in the output phase noise spectrum of a fractional-N frequency
synthesizer when nonlinearities are present in the loop. These spurs are generated by the …
synthesizer when nonlinearities are present in the loop. These spurs are generated by the …
The role of charge pump mismatch in the generation of integer boundary spurs in fractional-N frequency synthesizers: Why worse can be better
VS Sadeghi, HM Naimi… - IEEE Transactions on …, 2013 - ieeexplore.ieee.org
Fractional-N frequency synthesizers exhibit spurious tones (spurs). Spurs outside the loop
bandwidth can be attenuated by the loop filter. By contrast, in-band spurs cannot be …
bandwidth can be attenuated by the loop filter. By contrast, in-band spurs cannot be …