Cart (Loading....) | Create Account
Close category search window
 

Design of CMOS Millimeter-Wave Cross-Coupled LC Quadrature VCOs with Varactorless Frequency Tuning

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Chamas, I.R. ; Bradley Dept. of ECE, Virginia Polytech. Inst. & State Univ., Blacksburg, VA ; Raman, S.

We present the analysis and design of a 60 GHz LC QVCO in a 90 nm RF CMOS process based on the disconnected-source parallel coupled QVCO topology. We introduce a first order linear model of an LC QVCO at millimeter wave frequencies and derive the oscillator steady-state parameters. Varactor size optimization for maximum quality factor at millimeter wave frequencies is thoroughly analyzed. To overcome the classical tradeoff between the varactor quality factor and tuning range, we suggest an alternative wide-band linear frequency tuning technique based on the fundamental operation of LC QVCOs. By changing the bias of the coupling transistors (GMc-tuning), a wide frequency tuning range of 5 GHz (57.5 GHz rarr 62.5 GHz) can be achieved with very linear characteristics. The GMc-tuning technique exhibits 4 dBc/Hz lower phase noise than a varactor solution. The circuit draws a maximum of 17.6 mA (excluding buffer circuits) from a 1 V supply.

Published in:

Silicon Monolithic Integrated Circuits in RF Systems, 2008. SiRF 2008. IEEE Topical Meeting on

Date of Conference:

23-25 Jan. 2008

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.