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A general approach to nonlinear synthesis with MOS analog circuits

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2 Author(s)
Turchetti, C. ; Dipartimento di Elettronica, Ancona Univ., Italy ; Conti, M.

A universal approximator based on MOS analog circuits which provides direct analog synthesis of nonlinear functions is described. For this purpose a mathematical approach, founded on rigorous theoretical results and able to approximate a continuous function with a given small error, is reported. Within the theory it is demonstrated that a piecewise continuous function can be represented with particular sequences of functions, called Dirac functions, having certain useful properties. Moreover, it is shown that such functions can be implemented with MOS analog circuits, on the basis of which the architecture of a universal approximator of nonlinear functions is defined

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Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on  (Volume:40 ,  Issue: 9 )