Journal ArticleDOI
Electronically tunable versatile voltage-mode universal filter
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TLDR
In this paper, a versatile voltage-mode universal biquad filter using two single-output-operational transconductance amplifiers (OTAs), one differential difference current conveyor (DDCC) and two capacitors is proposed.Abstract:
A novel electronically tunable versatile voltage-mode universal biquad filter by using two single-output-operational transconductance amplifiers (OTAs), one differential difference current conveyor (DDCC) and two capacitors is proposed. The proposed circuit, which can be used as either a four-input single-output universal filter or a single-input three-output multifunction filter with the same topology. Besides, the new circuit offers the following advantageous features: realization of all the non-inverting and inverting biquadratic filter signals from the same configuration, no need to employ inverting-type input signals, no need to component-matching conditions and low passive sensitivity performance.read more
Citations
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Journal ArticleDOI
Electronically tunable high-input impedance voltage-mode universal biquadratic filter based on simple CMOS OTAs
TL;DR: In this paper, a new electronically tunable three inputs and single output voltage-mode universal biquadratic filter based on simple CMOS operational transconductance amplifiers (OTAs) and grounded capacitors was proposed.
Journal ArticleDOI
Single CCTA–Based Universal Biquadratic Filters Employing Minimum Components
TL;DR: A new second–order voltage– and current–mode universal biquadratic frequency filters using only single current conveyor transconductance amplifier and four passive elements is presented, enabling to realize the low–, band–, high–pass, band-stop and all–pass responses without changing the circuit topology.
Journal ArticleDOI
The conception of differential-input buffered and transconductance amplifier (DBTA) and its application
TL;DR: A novel versatile active building block the differential-input buffered and transconductance amplifier (DBTA) is proposed, which can realize four filter functions without changing the circuit topology and enables independent control of the quality factor Q using single passive element.
Journal ArticleDOI
New voltage-mode universal filter and sinusoidal oscillator using only single DBTA
TL;DR: In this paper, a voltage-mode second-order universal frequency filter and sinusoidal oscillator using only single differential-input buffered and transconductance amplifier (DBTA) is presented.
Journal ArticleDOI
Independently tunable voltage-mode OTA-C biquadratic filter with five inputs and three outputs and its fully-uncoupled quadrature sinusoidal oscillator application
TL;DR: In this article, an independently tunable five-input and three-output voltage-mode biquadratic filter using five single-ended output operational transconductance amplifiers (OTAs) and two grounded capacitors is presented.
References
More filters
Journal ArticleDOI
New multifunction OTA-C biquads
TL;DR: In this article, some novel multifunction biquadratic filters, each of which employs two to three operational transconductance amplifiers and two capacitors, are presented, which offer the following advantageous features.
Journal ArticleDOI
First-order allpass filter and sinusoidal oscillators using DDCCs
TL;DR: In this paper, a voltage-mode first-order all-pass filter using one differential difference current conveyor (DDCC), one grounded capacitor and one floating resistor is presented, where no passive component matching constraints are required.
Journal ArticleDOI
First-Order All-Pass Filter Canonical in the Number of Resistors and Capacitors Employing a Single DDCC
TL;DR: In this article, a voltage-mode canonical first-order all-pass filter is presented, which contains only a single resistor, a single capacitor, and a single differential difference current conveyor (DDCC).
Journal ArticleDOI
Universal current-mode OTA-C biquad with the minimum components
Chung-Ming Chang,Shih-Kuang Pai +1 more
TL;DR: A universal current mode operational transconductance amplifier-capacitor (OTA-C) biquad with three inputs and four outputs employing the minimum of components: only two OTAs and only two grounded capacitors is presented.
Journal ArticleDOI
Universal capacitor-grounded voltage-mode filter with three inputs and a single output
Chun-Ming Chang,Hua-Pin Chen +1 more
TL;DR: In this paper, a universal voltage-mode filter with three inputs and a single output has been realized by employing two grounded capacitors in addition to two active current conveyors and two resistors.