F&H Filter: A Novel Ultra-low Power Discrete Time Filter

Author

V. M. Grade Tavares
J. C. Principe
J. G. Harris, Missouri University of Science and TechnologyFollow

Abstract

A new technique for designing filters with long time constants in the discrete time domain is presented. The F&H (filter and hold) methodology halts the state of a continuous time filter every T seconds resulting in a filter implementation with time constants that can be controlled in three distinct ways: by the sampling period T, the duty cycle k = τ/T or the time constant of the continuous time filter prototype. The final filter can be constructed from a typical Gm-C technique with very low power consumption.

Recommended Citation

V. M. Grade Tavares et al., "F&H Filter: A Novel Ultra-low Power Discrete Time Filter," Electronics Letters, vol. 35, no. 15, pp. 1226 - 1227, Wiley; Institution of Engineering and Technology (IET), Jul 1999.

The definitive version is available at https://doi.org/10.1049/el:19990856

Department(s)

Electrical and Computer Engineering

International Standard Serial Number (ISSN)

0013-5194

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2025 The Authors, All rights reserved.

Publication Date

22 Jul 1999