Abstract: An adaptive filtering arrangement for providing bit-synchronous, time-dependent filtering of a time-varying analog input signal taking the form of a time-dependent low pass filter including at least one adaptive resistive element that exhibits a varying resistance value as a function of a time. The time-dependent low pass filter uses as a “control” input a modifying element responsive to a clock signal associated with the received signal for creating a time-varying control signal applied as an input to the adaptive resistive element. The time-varying control signal is created to be synchronous with a baud interval of a created output signal such that the instantaneous bandwidth of the time-dependent low pass filter is synchronous with the baud interval, exhibiting a relatively small bandwidth during a central portion of the baud interval and exhibiting a relatively large bandwidth during a transition from one baud interval to the next.

Abstract: A receiver including an amplifying section for converting a relatively low power digital input signal into a relatively high power digital output signal is configured to utilize an adjustable feedback signal that is synchronous with the bit rate of the incoming digital signal so as to modify the level of the feedback signal as a function of time along the width of each bit of the digital input signal, increasing the bandwidth of the receiver at the leading edge of each incoming bit and decreasing the bandwidth otherwise.