Ricerc@Sapienza

The Voltage Conveyor (VCII) is the dual of the second generation Current Conveyor (CCII), and has received only a cursory attention in the literature, probably for lack of interesting applications. The VCII has a current buffer between Y and X terminals, and a voltage buffer between X and Z terminals. In this way, it makes it easier to sum (current) signals at the Y node, whereas CCIIs make it easier to sum (current) signals at the X node. Exploiting this difference between the two dual circuits, a very simple N-port synthesizer can be obtained using only N VCIIs. A mixed-signal Y-matrix synthesizer using VCIIs is also proposed, which is the dual of a similar one using CCIIs, and can also be used as an N-port analyzer, with an advantage with respect to the CCII-based version related to the possibility of sensing low-impedance (voltage) inputs. An inductor emulator and a lowpass/bandpass biquad filter are also simulated, showing the versatility of the VCII.