Voltage-Mode High Input Impedance Highpass, Bandpass and Lowpass Filters Using Two Current Conveyors

This paper describes a filter circuit based on one second-generation current conveyor (CCII), one differential voltage current conveyor (DVCC), three resistors and two grounded capacitors. Outputs of three voltage-mode filter responses, which are highpass, bandpass and lowpass are available in the proposed circuit. The proposed circuit has the feature of high input impedance. It employs only grounded capacitors and is ideal for integration. Simulation results are carried out to confirm the theoretical analysis.