SC implementation of FIR filters for digital communication systems

In this paper a Switched-Capacitor (SC) architecture for the processing of binary input signals is presented. The architecture is especially useful for the realization of Finite Impulse Response (FIR) filters. A 23-th order Raised-Cosine (RC) filter employing 11 capacitors is designed. The filter has been simulated using a 0.8 /spl mu/m analog CMOS process. Hspice results have shown the feasibility of the proposed design technique.