Transversal filter

摘要

A transversal filter with a charge shift device is disclosed for realizing a given filter function. The charge shift device includes a substrate of doped semiconductor material having arranged on one surface thereof a series of shift elements, each shift element having a plurality of capacitor elements in correspondence to the number of shift pulse sequence lines employed with the charge shift device. A serial input is provided for the filter to which an input signal is connected. Capacitor elements connected to one of the shift pulse sequence lines have non-reactive amplifying output units connected thereto. At least one of the capacitor elements connected to at least one of the other shift pulse sequence lines has an additional non-reactive amplifying unit connected thereto. All of the non-reactive amplifying units also connect with an output of the filter.