By Topic

An On-Chip Tunable Frequency Generator for Crystal-Less Low-Power WBAN Radio

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)
Yi-Chun Shih ; Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA ; Otis, B.

This brief presents a digitally tunable frequency generator for crystal-less low-power radios in size-constrained wireless-body-area-network applications. A switched-capacitor frequency-to-voltage converter is used to lock a ring oscillator (RO) to an on-chip reference voltage. The proposed frequency lock loop (FLL) significantly reduces the supply and temperature dependences of the RO frequency by 400x and 13x, respectively, to 0.23%/V and 126 ppm/°C compared to a RO without the FLL. The output frequency can be digitally tuned from 325 to 420 MHz with a resolution of 80 ppm to allow channelization or calibration.

Published in:

Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:60 ,  Issue: 4 )