Abstract
A simple modification of the time-multiplexed active filter allows the transfer function to be electronically tuned. The method is to allow the switched memoryless active subnetwork to be multiplexed in such a way that a variable time slot is allocated to each stage of the filter. Electronic variation of this time slot achieves a corresponding tuning of the transfer function. In terms of circuitry, a simple modification to the logic drive circuitry is required to make tuning possible.
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