By Topic

Feedback influence on ring oscillator performance for IR-UWB pulse generator in 0.13μm CMOS technology

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

5 Author(s)
Jelena Radic ; Dep. of Power, Electronic and Telecommunication Engineering, Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovica 6, Novi Sad, Serbia ; Alena Djugova ; Laszlo Nagy ; Kalman Babkovic
more authors

A CMOS standard three-stage ring oscillator is examined in UMC 0.13μm technology. The influence of PMOS transistors, as inverter feedbacks, on the ring oscillator performance is investigated. Since the ring oscillator usually drives a buffer in pulse generator/transmitter chain, dependence of its frequency and peak-to-peak amplitude on the buffer PMOS transistor feedback is presented in the paper. Simulation results showed that by varying the feedback transistor control voltage from 0 to Vdd, the ring oscillating frequency can be controlled in the range of 3.15 GHz in the three PMOS transistor feedbacks topology, 2.3 GHz in the two feedbacks architecture, 0.95 GHz (the best case) in the one feedback ring oscillator designs, and 1.5 GHz for the PMOS transistor feedback used in the buffer stage. Moreover, the maximum frequency of 8.9 GHz obtained in the latter case is significantly higher than 7.65 GHz achieved without any feedback.

Published in:

ELMAR, 2012 Proceedings

Date of Conference:

12-14 Sept. 2012