Open AccessMulti‐phase feedforward ring VCO with high frequency and low phase noise
Author(s) -
Xie Lei,
Sang Hao,
Chen HaiYan,
Liang Bin,
Yan Li,
Yuan Hengzhou
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2020.2017
Subject(s) - phase noise , oscillator phase noise , voltage controlled oscillator , feed forward , oscillation (cell signaling) , control theory (sociology) , noise (video) , phase (matter) , electronic engineering , acoustics , physics , computer science , engineering , electrical engineering , noise figure , voltage , cmos , chemistry , amplifier , biochemistry , control (management) , quantum mechanics , control engineering , artificial intelligence , image (mathematics)
A novel feedforward‐coupling ring oscillator (FRVCO) is presented. A comparative study in terms of oscillation frequency and phase noise is conducted between the proposed model and the traditional FRVCO. Due to the improved delay cell, high oscillation frequency, low phase noise and uniform multi‐phase output can be achieved. Compared with the traditional FRVCO, under the same design parameters, the FRVCO proposed in this Letter can increase the oscillation frequency by 10% while reducing the phase noise at 1 MHz by at least 10 dB.