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- Title
High-Input Impedance Voltage-Mode Multifunction Filter Using a Single DDCCTA and Grounded Passive Elements.
- Authors
Tangsrirat, Worapong; Channumsin, Orapin
- Abstract
In this paper, a novel single-input three-output (SITO) second-order multifunction active voltage filter with high-input impedance is proposed. The proposed circuit is based on using the recently reported active building block, namely differential difference current conveyor transconductance amplifier (DDCCTA). It employs one DDCCTA as active element together with one grounded resistor and two grounded capacitors as passive elements. The circuit still maintains the following advantageous features: (i) the simultaneous realization of lowpass, bandpass and highpass responses from the same topology, (ii) no requirements for component matching conditions, (iii) electronic controllability of important filter parameters, (iv) simpler structure due to contains only one DDCCTA and three passive elements, and (v) low sensitivity performance. The non-ideal gain effects of the developed filter are examined and PSPICE simulation results are included using 0.5 µm MIETEC CMOS technology parameters.
- Subjects
ELECTRIC impedance; ELECTRIC potential; ELECTRIC filters; ELECTRONIC circuits; ELECTRONIC amplifiers; ELECTRICAL conductors; ELECTRIC controllers
- Publication
Radioengineering, 2011, Vol 20, Issue 4, p905
- ISSN
1210-2512
- Publication type
Article