Current-mode circuit to realize fuzzy classifier with maximum membership value decision
Chuen-Yau Chen, Ju-Ying Tsao, Bin-Da Liu · 2002
A current-mode circuit to realize a fuzzy classifier is proposed in this paper. It is composed of two principal building blocks including the Euclidean distance calculator and the membership degree calculator. This classifier circuit is designed in modular methodology for easy expansion. To consider the proposed circuit more practically, the nonideal effects, such as body effect, channel length modulation, and device matching problem are also discussed. This classifier has been simulated with HSPICE in level 28 model and fabricated with 0.6 /spl mu/m single-polysilicon-double-metal CMOS process. The experimental results are in agreement with the simulation results. The hardware realization allows this classifier to operate in parallel rather than in serial as software-level verification does.