By Topic

An Active Guarding Circuit Design for Wideband Substrate Noise Suppression

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

3 Author(s)
Hao-Ming Chao ; Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu ; Wen-Shen Wuen ; Kuei-Ann Wen

In this paper, an active guarding circuit is presented for wideband substrate noise suppression. A feed-forward compensation mechanism is proposed to extend the noise suppression bandwidth and to adjust the amplitude of phase-inversed noise cancellation current by introducing a zero and an amplitude controller. A noise decoupling mechanism is developed to provide a decoupling path and to sense the noise level for generating noise cancellation current. With substrate characterization, parameters of substrate network impedance, decoupling factor, and amplitude of noise cancellation current can be either obtained or determined. The active guarding circuit is implemented in a 90-nm CMOS process based on substrate characterization. The measured substrate noise suppression is better than -9 dB from dc to 250 MHz. The - 3-dB suppression bandwidth is effectively extended to 1.2 GHz. The power consumption and circuit area are 2.5 mW and 20times mum times 41 mum, respectively.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:56 ,  Issue: 11 )