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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 12, December 2000

Table of Contents for this issue

Complete paper in PDF format

A New Macromodeling Approach for Nonlinear Microwave Circuits Based on Recurrent Neural Networks

Yonghua Fang, Student Member, IEEE Mustapha C. E. Yagoub, Member, IEEE Fang Wang, Student Member, IEEE and Qi-Jun Zhang Senior Member, IEEE

Page 2335.

Abstract:

In this paper, a new macromodeling approach is developed in which a recurrent neural network (RNN) is trained to learn the dynamic responses of nonlinear microwave circuits. Input and output waveforms of the original circuit are used as training data. A training algorithm based on back propagation through time is developed. Once trained, the RNN macromodel provides fast prediction of the full analog behavior of the original circuit, which can be useful for high-level simulation and optimization. Three practical examples of macromodeling a power amplifier, mixer, and MOSFET are used to demonstrate the validity of the proposed macromodeling approach.

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