Interpolation of sampled-data filter output
A.R. Owens, PD Thomas · Proceedings of the Institution of Electrical Engineers · 1978
Circuits are described for the performance of interpolation and extrapolation at the output of sampled-data filters. F.E.T.s are used in pairs as voltage-controlled conductances with additional circuitry to overcome their inherent nonlinearities. The output is d.c. coupled and the gain is independent of the sampling frequency.