Adaptive signal processing
Adaptive filter theory (2nd ed.)
Adaptive filter theory (2nd ed.)
Adaptive inverse control
A FPGA version of a non-linear adaptive filter
SBCCI'99 Proceedings of the XIIth conference on Integrated circuits and systems design
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This paper presents some architectural studies regarding mixed signals Programmable Components (FPGAs em Gate Arrays). The effect of programmability through the use of switches is analyzed, and it is shown that the result is a tranfer jitnction modification when real characteristics of the switches are assumed. Moreover, the paper proposes the use of externally linear, internally non-linear analog circuits, since this procedure could eliminate the error introduced by the switches. Using this approach, analog area is greatly reduced, and circuits can be built on top of digital technologies. Some experimental results in the analog and digital domain support the proposed approach to mixed circuits reprogrammability, being the basis for a mixed signal FPGA.