Title :
Novel electronically tunable current-mode filter without external passive elements
Author :
Tsukutani, Takao ; Ishida, Masaru ; Tsuiki, Sumio ; Fukui, Yutaka
Author_Institution :
Dept. of Electr. Eng., Matsue Coll. of Technol., Japan
Abstract :
This paper presents a current-mode filter with a general class of circuit transfer functions using active devices only. This circuit employs Operational Amplifiers (OAs) and multiple current output Operational Transconductance Amplifiers (OTAs) as the basic building units. It is shown that the circuit can realize various filter characteristics by choosing the current output branches. It is also shown that the circuit provides electronically tuning capability of the filter characteristics. An example is shown with the simulated results by PSpice
Keywords :
active filters; circuit tuning; operational amplifiers; transfer functions; active devices; circuit transfer functions; current output branches; current-mode filter; electronically tunable filter; filter characteristics; multiple current output OTA; operational amplifiers; operational transconductance amplifiers; Active filters; Buildings; Circuit optimization; Circuit simulation; Circuit synthesis; Current mode circuits; Operational amplifiers; Passive filters; Transfer functions; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.539879
