High-order voltage transfer function synthesis using CCII+ based unity gain current amplifiers

Using the signal-flow graph approach, a general synthesis method for the realisation of high-order voltage transfer functions is presented and a current conveyor filter is obtained. The resulting filter contains a minimum number of capacitors, at most 2n+3 resistors, as well as n+2 current conveyors of plus type, all of which operate in current-mode.