A 10-GHz Digital-PLL-Based Chirp Generator With Parabolic Non-Uniform Digital Predistortion for FMCW Radars

F Tesolin, SM Dartizio, G Castoro… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This article describes a 10-GHz chirp generator for frequency-modulated continuous-wave
(FMCW) radars, that is based on a digital PLL (DPLL) with a two-point injection of the …

A DPD/Dither-Free DPLL Based on a Cascaded Fractional Divider and Pseudo-Differential DTCs Achieving a 62.1-dBc Fractional Spur

D Xu, Z Liu, Y Kuai, H Huang, Y Zhang… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This article presents a 7-GHz fractional-N digital phase-locked loop (DPLL) without any
digital pre-distortion (DPD) on the integral nonlinearity (INL) of the digital-to-time converter …

A Low-Jitter and Compact-Area Fractional-N Digital PLL With Fast Multi-Variable Calibration Using the Recursive Least-Squares Algorithm

S Jang, M Chae, H Park, C Hwang… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This work presents a fractional-N digital phase-locked loop (DPLL) characterized by low
jitter and small area, featuring fast multi-variable calibration. To minimize the use of silicon …

Canceling Fundamental Fractional Spurs Due to Self-Interference in a Digital Phase-Locked Loop

Z Gao, RB Staszewski, M Babaie - IEEE Journal of Solid-State …, 2024 - ieeexplore.ieee.org
Parasitic coupling between the building blocks within a fractional-N phase-locked loop (PLL)
can result in noticeable spurs in its output spectrum, thus affecting the PLL's usability in …

A Low-Noise Fractional- Digital PLL Using a Resistor-Based Inverse-Constant-Slope DTC

P Salvi, SM Dartizio, M Rossoni… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This work presents a digital-to-time converter (DTC)-based fractional-phase-locked loop
(PLL) achieving low jitter and low spurs. Thanks to the proposed resistor-based inverse …

A Low-Jitter Fractional- Digital PLL Adopting a Reverse-Concavity Variable-Slope DTC

M Rossoni, SM Dartizio, F Tesolin… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This article presents a fractional-digital-to-time converter (DTC)-based digital phase-locked
loop (PLL), achieving simultaneously low phase noise and low spurious tones. The PLL …

A Dual-Alternating-Slope Digital-to-Time Converter Leveraging Mismatch to Improve Delay Step Size

N Jain, EAM Klumperink, H van Rumpt… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This article introduces a dual-alternating-slope digital-to-time converter (DASDTC) topology
that reduces the dependency of DTC delay on component values and power supply. A …

A Harmonic-Mixer-Based Fractional-N PLL Employing Voltage-Domain Feed-Forward Noise Cancellation

H Zhang, M Osada, Y Zhu… - IEEE Journal of Solid-State …, 2024 - ieeexplore.ieee.org
A harmonic-mixer (HM)-based fractional-N phase-locked loop (PLL) employing voltage-
domain feed-forward noise cancellation (FFNC) is presented in this article. By adding the …

Nonlinearity-Induced Spur Analysis in Fractional-N Synthesizers With ΔΣ Quantization Cancellation

Y Hu, W Tao, RB Staszewski - IEEE Open Journal of the Solid …, 2024 - ieeexplore.ieee.org
A fractional-N frequency synthesizer with low total jitter [eg,< 50fsrms, accounting for both
phase noise (PN) and spurs] is essential for enabling the emerging 5G/6G and other high …

Digital Phase-Locked Loops: Exploring Different Boundaries

Y Zhang, D Xu, K Okada - IEEE Open Journal of the Solid-State …, 2024 - ieeexplore.ieee.org
This article examines the research area of digital phase-locked loops (DPLLs), a critical
component in modern electronic systems, from wireless communication devices to RADAR …