High Output Impedance Current-mode Universal Filter With Independent Control of Pole Frequency and Quality Factor

摘要

This article presents a current-mode universal filter based-on parallel RLC circuit using CCCIIs as active element. The pole frequency and quality factor can be electronically/orthogonally controlled via input bias currents. The circuit description consists of merely 4 CCCIIs and 2 capacitors. Without any external resistors, the proposed circuit is then suitable for IC architecture. The proposed circuit due to high output impedances enable easy cascading in current-mode. The PSPICE simulation results are depicted, and the given results agree well with the theoretical anticipation.