I.C. Macbeth
Philips
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Publication
Featured researches published by I.C. Macbeth.
international symposium on circuits and systems | 1990
John B. Hughes; I.C. Macbeth; D.M. Pattullo
A switched-current integrator configuration with greatly improved sensitivity to transistor mismatch is described. Forward-Euler, backward-Euler, and bilinear-z mappings are described, as well as an integrator which responds to the derivative of the input current. An universal integrator configuration which performs an identical algorithm to a well-known switched-capacitor universal integrator is developed. It can be used to translate known switched-capacitor filter topologies into switched-current counterparts, as is demonstrated by the simulation of a sixth-order low-pass filter.<<ETX>>
international symposium on circuits and systems | 1990
John B. Hughes; I.C. Macbeth; D.M. Pattullo
Two styles of filter module, one based on the switched-current integrator and the other on the switched-current differentiator, are presented. Design methods for implementing filters with cascaded biquadratic sections using these modules are given. Two topologies for an elementary current memory cell having circuit properties advantageous to this design environment are described.<<ETX>>
international symposium on circuits and systems | 1989
John B. Hughes; Neil C. Bird; I.C. Macbeth
IEE Proceedings G Circuits, Devices and Systems | 1990
John B. Hughes; I.C. Macbeth; D.M. Pattullo
IETE Journal of Education | 1999
I.C. Macbeth; D.M. Pattullo
Electronics Letters | 1990
John B. Hughes; I.C. Macbeth; D.M. Pattullo
Archive | 1993
John B. Hughes; Neil C. Bird; I.C. Macbeth
Analogue IC Design: Obstacles and Opportunities, IEE Colloquium on | 1990
John B. Hughes; I.C. Macbeth; D.M. Pattullo
Archive | 1994
D.M. Pattullo; I.C. Macbeth
Archive | 1994
D.M. Pattullo; I.C. Macbeth
