By Topic

A Physics-Based Equivalent-Circuit Model for On-Chip Symmetric Transformers With Accurate Substrate Modeling

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

6 Author(s)
Chuan Wang ; Inst. of Microelectron., Peking Univ., Beijing ; Huailin Liao ; Yongzhong Xiong ; Chen Li
more authors

A physics-based equivalent-circuit model for on-chip symmetric transformers is presented with all the model elements driven from fabrication specifications. Two extra coupled transformer loops are used for each coil to model the parameters of skin effect, proximity effect, and reflective effect of the substrate eddy current, respectively. Model accuracy under free space is first demonstrated using an electromagnetic field solver without considering substrate loss. Several sets of transformers were fabricated on a standard 0.18- mum 1P8M RF CMOS technology to further verify the accuracy and scalability of the proposed model. By careful comparison of S -parameters, coil inductance, quality factor,coupling coefficient, and maximum available gain between measured data and simulated data, model accuracy, and scalability are verified over a wide range of geometry configurations.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:57 ,  Issue: 4 )