Two-dimensional switched capacitor filter design system for real-time image processing

摘要

The author presents a new method of switched capacitor (SC) network design for two-dimensional real-time filtering. A model of such a network is presented with a computer design system for 2-D SC filters. This system uses a novel compact matrix description of a 2-D network that is fast and efficient. The problem of 2-D filter design is reduced to the problem of 1-D multiport SC network synthesis. This SC network is obtained with the use of a lossless nonreciprocal prototype circuit. A 2-D high-emphasis filter illustrates the operation of this system. Such a filter can be realized as a single CMOS chip and, in comparison with digital realization, a considerable reduction in cost and power consumption can be achieved.