Title :
Realization of Nth-order electronically tunable highpass filter employing only N OTAs
Author :
Olsak, Michal ; Matejicek, Lukas ; Vrba, Kamil ; Smekal, Zdenek
Author_Institution :
Dept. of Telecommun., Brno Univ. of Technol., Czech Republic
fDate :
23 Feb.-1 March 2003
Abstract :
A new method for the realization of an electronically tunable high-order admittance function that can be used for the synthesis of non-cascade active frequency filters is introduced. Operational transconductance amplifiers (OTA) are employed as active elements. Electronically controlled high-order highpass filters are presented. As an example, two types of fourth-order Butterworth highpass filters are designed, simulated (using PSPICE) and measured.
Keywords :
SPICE; active filters; circuit simulation; circuit tuning; high-pass filters; operational amplifiers; OTA; PSPICE; active elements; electronically tunable high-order admittance; electronically tunable highpass filter; filter simulation; fourth-order Butterworth highpass filters; high-order highpass filters; noncascade active frequency filters; operational transconductance amplifiers; Active filters; Admittance; Frequency; Integrated circuit technology; Operational amplifiers; SPICE; Semiconductor optical amplifiers; Transconductance; Tunable circuits and devices; Voltage control;
Conference_Titel :
Telecommunications, 2003. ICT 2003. 10th International Conference on
Print_ISBN :
0-7803-7661-7
DOI :
10.1109/ICTEL.2003.1191490
