Design of a 2.5-GHZ QVCO robust against high frequency substrate noise

This work presents the design procedure followed to obtain a low‐power voltage‐controlled oscillator (VCO) robust against high‐frequency substrate noise, using as a demonstrator a 2.5 GHz VCO with quadrature outputs (QVCO) based on a 5‐GHz LC tank resonant VCO (LC‐VCO) and frequency divider. A simpl...

Full description

Saved in:
Bibliographic Details
Published in:Microwave and optical technology letters 2011-07, Vol.53 (7), p.1632-1637
Main Authors: Molina, Marc, Gómez, Dídac, Aragones, Xavier, Mateo, Diego, González, José Luis
Format: Article
Language:English
Subjects:
Circuits integrats
Enginyeria electrònica
frequency pulling
Guidelines
High frequencies
Mathematical analysis
Microelectrònica
Microwaves
Noise
On-line systems
Oscil·ladors elèctrics
QVCO
substrate noise
Tanks
Tradeoffs
voltage controlled oscillator
Voltage-controlled oscillators
Àrees temàtiques de la UPC
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work presents the design procedure followed to obtain a low‐power voltage‐controlled oscillator (VCO) robust against high‐frequency substrate noise, using as a demonstrator a 2.5 GHz VCO with quadrature outputs (QVCO) based on a 5‐GHz LC tank resonant VCO (LC‐VCO) and frequency divider. A simple, intuitive, and easy to handle analytical model is proposed to identify the design parameters that contribute to the performance degradation of LC‐VCOs due to the effect of high frequency substrate noise. The guidelines obtained have been applied in the design of the low‐power QVCO. Finally, the work discusses several trade‐offs that can be used to maximize the immunity of a LC‐VCO against substrate noise. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26043
ISSN:0895-2477
1098-2760
1098-2760
DOI:10.1002/mop.26043