Title :
Frequency dependent negative resistor based on differential-input buffered and transconductance amplifier
Author :
Vavra, Jiri ; Bajer, Josef ; Biolek, Dalibor
Author_Institution :
Dept. of Electr. Eng., Univ. of Defence, Brno, Czech Republic
Abstract :
The purpose of the paper is to introduce a novel application of the modern active building block, namely Differential-input Buffered and Transconductance Amplifier (DBTA). The circuit proposed is a Frequency Dependent Negative Resistor (FDNR), which requires one DBTA and only two grounded capacitors. These features make it suitable for full integration on a chip. For the purpose of experimental verification, the proposed circuit was implemented using commercially available components and properly tested in an application of ladder filter. Experimental results are in a full agreement with theoretical expectations as well as PSpice simulation.
Keywords :
SPICE; capacitors; ladder filters; operational amplifiers; resistors; DBTA; FDNR; PSPICE simulation; active building block; differential-input buffer; frequency dependent negative resistor; grounded capacitors; ladder filter; transconductance amplifier; Capacitors; Filtering theory; Frequency dependence; Integrated circuit modeling; Mathematical model; Resistors; Transconductance; Bruton transformation; DBTA; Frequency Dependent Negative Resistor; frequency filter;
Conference_Titel :
Electrical & Electronics Engineers in Israel (IEEEI), 2012 IEEE 27th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4673-4682-5
DOI :
10.1109/EEEI.2012.6377062
