By Topic

A 21.4% tuning range 13 GHz Quadrature voltage-controlled oscillator utilizing manipulatable inherent bimodal oscillation phenomenon in standard 90-nm CMOS process

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
$33 $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)
Shih-Chieh Shin ; School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, 30308, U.S.A ; Joy Laskar

This paper presents a theoretical analysis and control procedure of the bimodal oscillation phenomenon inherent to LC-tuned Quadrature voltage-controlled oscillators (QVCOs). A systematic start-up procedure is proposed to drive the quadrature VCO (QVCO) into the desirable mode of operation by controlling its initial conditions. By means of this approach, two parallel tuning curves can be obtained without switching capacitor or inductor banks, thus no penalty on phase noise and circuit complexity. The tuning frequency of the QVCO is from 11.7 to 14.5 GHz under 1 V supply and 0 to 1 V control voltage. This corresponds to a 21.4% tuning range with a moderate phase noise of -108 dBc/Hz at 1 MHz offset frequency. The core dc power consumption is 10.6 mW. A phase-locked loop (PLL) control methodology for forcing the QVCO into the desirable mode is also proposed for practical applications.

Published in:

Silicon Monolithic Integrated Circuits in RF Systems (SiRF), 2011 IEEE 11th Topical Meeting on

Date of Conference:

17-19 Jan. 2011