CMOS fast FIR filter

A cascadable circuit for high speed filtering has been made in a 1.2 mu m CMOS technology. Its structure allows the circuit to perform a 40 taps transversal filter either at 3 MHz alone or up to 50 MHz in a simple cascaded configuration of 16 circuits. The coefficients of the filter are mask programmable. The purpose of this circuit is for satellite communications. >