A Wideband LO Generator for 5G FR1 Bands Using a Single LC-VCO-Based Subsampling PLL and a Ring-VCO-Based Fractional-Resolution Frequency Multiplier

Y Jo, J Kim, Y Shin, H Park, C Hwang… - IEEE Journal of Solid …, 2023 - ieeexplore.ieee.org
In this work, an ultra-low-jitter wideband cascaded local oscillation (LO) generator for 5G
frequency range 1 (FR1) is presented. Using the phase-rotating divider (PRD) of the 2nd …

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-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 …

Wideband Low Phase-Noise Signal Generation Using Coaxial Resonator in Cascaded Phase Locked Loop

A Blatnik, B Batagelj - Electronics, 2024 - mdpi.com
The generation of high-quality wideband frequency sweeps presents a significant challenge,
particularly in modern telecommunication, radar, and measurement systems where …

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 …

10.1 An 8.75GHz Fractional-N Digital PLL with a Reverse-Concavity Variable-Slope DTC Achieving 57.3fsrms Integrated Jitter and −252.4dB FoM

M Rossoni, SM Dartizio, F Tesolin… - … Solid-State Circuits …, 2024 - ieeexplore.ieee.org
Advanced wireless transceivers exploit high-order modulation schemes to increase data-
rates and call for high-spectral-purity frequency synthesizers. To serve this purpose, a …

A 6.5-to-8-GHz Cascaded Dual-Fractional- Digital PLL Achieving 52.79-dBc Fractional Spur With 50-MHz Reference

D Xu, Y Zhang, H Huang, Z Sun, B Liu… - IEEE Journal of Solid …, 2024 - ieeexplore.ieee.org
This work presents a 6.5-to-8-GHz cascaded dual-fractional-digital phase-locked loop
(DPLL) that avoids fractional spur degradation in near-integer channels by utilizing two PLLs …

A 66.7 fs-Integrated-Jitter Fractional-N Digital PLL Based on a Resistive-Inverse-Constant-Slope DTC

P Salvi, SM Dartizio, M Rossoni… - 2024 IEEE Custom …, 2024 - ieeexplore.ieee.org
Modern fractional-N PLLs used as low-jitter local oscillators for wireless systems generally
adopt a digital-to-time converter (DTC) to cancel-out the quantization-error (QE) induced by …

A 59.3 fs Jitter and-62.1 dBc Fractional-Spur Digital PLL Based on a Multi-Edge Power-Gating Phase-Detector

SM Dartizio, M Rossoni, F Tesolin… - 2024 IEEE Custom …, 2024 - ieeexplore.ieee.org
To unlock wide data-rates, wireless transceivers require ultra-Iow-jitter local-oscillators.
Fractional-N PLLs achieve low-noise using a digital-to-time converter (DTC) to re-align the …