A 5.25GHz Subsampling PLL with a VCO-Phase-Noise Suppression Technique
Journal
Digest of Technical Papers - IEEE International Solid-State Circuits Conference
Journal Volume
2020-February
Pages
390-392
Date Issued
2020
Author(s)
Ting, H.-H.
Abstract
Ring-oscillator (RO)-based PLLs are preferred in many applications. These PLLs exhibit features like small area, large tuning range, and multiple output phases. However, their jitter performance is worse than that in LC-oscillator-based PLLs. Although a wider PLL bandwidth can reduce the RO phase noise, it is also limited to one-tenth of the reference frequency due to loop stability. To overcome the VCO noise, injection-locked PLLs (IL-PLLs) were proposed to extend the loop bandwidth to O.4fREF but suffered from large spurious tones. © 2020 IEEE.
SDGs
Other Subjects
Bandwidth; Phase noise; Variable frequency oscillators; Injection locked; Jitter performance; Large tuning range; Multiple outputs; Phase noise suppression; Reference frequency; Ring oscillator; Spurious tones; Phase locked loops
Type
conference paper