Abstract
We have implemented a four-tap adaptive filter in a continuous-time analog VLSI circuit. Since an ideal delay is impossible to implement in continuous-time hardware, we implemented the delay line as a cascade of low-pass filters (called the Gamma filter). Since many years of research in our lab has shown that the Gamma filter outperforms the delay line for a wide range of applications, the Gamma filter should not be considered merely a crude approximation of the ideal delay line. We show measured results from an analog chip that solves the problem of system identification-identifying an unknown linear circuit from its input/output relationship. Furthermore, we believe that a cascade of all-pass filters (called the Laguerre filter) may potentially outperform the Gamma filter, and we demonstrate a feedforward Laguerre filter still without adaptive weights. © 1997 IEEE.
Recommended Citation
J. K. Juan et al., "Analog Hardware Implementation Of Adaptive Filter Structures," IEEE International Conference on Neural Networks Conference Proceedings, vol. 2, pp. 916 - 921, article no. 616147, Institute of Electrical and Electronics Engineers, Dec 1997.
The definitive version is available at https://doi.org/10.1109/ICNN.1997.616147
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-078034122-7
International Standard Serial Number (ISSN)
1098-7576
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Dec 1997
