First-order all pass section with electronic and independent tuning

This paper presents a realization of an electronically tunable first-order all pass section (APS) employing a differential voltage current conveyor (DVCC), an operational trans-conductance amplifier (OTA) and two MOS conductance. The circuit can realize two all pass characteristics by choosing the current output of the OTA. Additionally, the circuit parameters ¿₀ and H can be set independently through adjusting the circuit active components electronically. Sensitivity analysis shows that the APS enjoys very low sensitivity to the circuit components. An example is given together with simulated results by PSPICE.