Paper Info
Title
A Bidirectional Nonlinearly Coupled QVCO With Passive Phase Interpolation for Multiphase Signals Generation
Abstract
This brief presents a bidirectional nonlinearly coupled quadrature voltage-controlled oscillator (BNC-QVCO) incorporating passive phase interpolation for the generation of multiphase signals. In addition, to generate multiphase signals, the proposed bidirectional nonlinearly coupling network improves the phase noise performance of the QVCO by producing approximate-in-phase injection-coupling currents into the LC tank. Moreover, to balance the amplitude of eight-phase signals, an additional passive amplitude division circuit is implemented with capacitor banks for calibration. For verification, a BNC-QVCO incorporating passive phase interpolation is implemented in a 40-nm CMOS technology with a core area of 0.13 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The measured multiphase signals achieve a phase noise of -116.57 dBc/Hz at 1-MHz offset from 4.32 GHz. The power consumption without buffers is 10.2 mW under 1-V supply voltage and a 20% frequency tuning range from 4 to 4.8 GHz is achieved with the implemented digitally controlled capacitor banks.
Year
DOI
Venue
2021
10.1109/TVLSI.2021.3077613
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Keywords
DocType
Volume
Bidirectional nonlinearly coupling network,CMOS quadrature voltage-controlled oscillator (QVCO),in-phase injection coupling,multiphase signals,passive phase interpolation,phase noise
Journal
29
Issue
ISSN
Citations 
7
1063-8210
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Yangtao Dong102.03
Chirn Chye Boon213626.81
Xin Ding3319.26
Li Chenyang4148.48
Zhe Liu56215.62