Nth order current mode universal filter using MOCCCIIs

• Published in: Analog integrated circuits and signal processing Vol. 95; no. 1; pp. 181 - 193
• Main Authors: Kumar, Ashok, Paul, Sajal K.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-04-2018; Springer Nature B.V
• Subjects: Circuits; Circuits and Systems; Conveyors; Current conveyors; Electrical Engineering; Engineering; Input impedance; Low pass filters; Mixed Signal Letter; Passive components; Signal,Image and Speech Processing; MOCCCIIs; High-order filter; Universal filter; Transimpedance mode; Current mode (CM)
• ISSN: 0925-1030; 1573-1979
• DOI: 10.1007/s10470-018-1127-3

This article presents a new current mode single-input-multiple-output nth order universal filter. The proposed circuit employs (n + 1) number multiple output second generation current conveyors and n number grounded capacitors only. Presented circuits can realize current mode low pass, high pass, band pass, notch and all pass responses simultaneously at different high output impedance terminals. The current mode filter circuit provides low input impedance by selecting the proper value of bias current and also has high output impedance, which is suitable for cascading. The circuit offers some important features such as resistor less realization, no passive component matching constraints, low sensitivity, electronic tunability and active-C realization. The functionality of the proposed filter circuit is tested with the PSPICE simulation, which is found to agree well with the proposed theory.