Results 161 to 170 of about 573 (186)

New CFOA-based shadow banpass filter

2016 International Conference on Electronics, Information, and Communications (ICEIC), 2016
This paper presents a new topology for implementing a bandpass shadow filter using the current-feedback operational amplifier (CFOA). The proposed circuit uses CFOAs, and avoids the use of external summing circuit to implement a shadow bandpass filter with controlled center frequency. Experimental results obtained using the AD844 CFOA are included.
Muhammad Taher Abuelma'atti, Naif Almutairi   +1 more
openaire   +1 more source

New voltage controlled oscillators using CFOAs

AEU - International Journal of Electronics and Communications, 2009
Abstract In this paper, some new current feedback operational amplifier (CFOA)-based voltage-controlled oscillators (VCOs) have been introduced. The proposed circuits offer a number of advantageous features over previously known CFOA-based VCOs. The workability of the presented circuits has been demonstrated using AD844 CFOAs and BFW10 FETs.
S.S. Gupta, D.R. Bhaskar, R. Senani
openaire   +1 more source

Voltage-Mode Multifunction and Universal Biquads with Two CFOAs

Journal of Circuits, Systems and Computers
In this paper, a new voltage-mode (VM) multifunction filter including only two grounded capacitors, three resistors, and two current feedback operational amplifiers is introduced. This filter with one high input impedance and two low output impedances can simultaneously provide band-pass filter (BPF) and low-pass filter (LPF) responses with an ...
Mehmet Dogan, Erkan Yüce, Zafer Dicle
openaire   +2 more sources

Comparison between Miller integrator cells using VOAs and CFOAs

9th International Conference on Electronics, Circuits and Systems, 2003
The current feedback opamp (CFOA) emerged as a high-speed alternative to the conventional voltage operational amplifier (VOA) and since its introduction a wide spectrum of applications have been proposed, also in the filters area. However, no effort has been aimed to demonstrate under what conditions improvements are achievable and to outline eventual ...
R. MITA, PALUMBO, Gaetano, PENNISI, Salvatore   +2 more
openaire   +2 more sources

A Simple Grid Multiscroll Chaotic Electronic Oscillator Employing CFOAs

International Journal of Bifurcation and Chaos, 2014
In this paper, a novel grid multiscroll chaotic electronic oscillator with simple circuit design is proposed. The proposed grid multiscroll chaotic circuit only needs two current feedback operational amplifiers (CFOAs) as current integrators, passive RC, and nonlinear elements in the form of current stair nonlinear function series (SNFS) realized with
Yuan Lin, Chun Hua Wang 0001, Jin Wen Yin, Yan Hu   +3 more
openaire   +3 more sources

CFOA based inverting amplifier bandwidth enhancement

IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 2001
A theoretical study of the high frequency characteristic of an inverting amplifier based on a current feedback operational amplifier is presented. It is shown that the amplifier bandwidth and step response can be improved using a pole-zero compensation technique. Simulation and experimental results agree with the theory.
openaire   +1 more source

Realization of Other Building Blocks Using CFOAs

2013
In this chapter, it has been demonstrated how CFOAs have been used by a number of researchers in realizing other analog circuit building blocks such as various types of current conveyors, unity gain voltage and current followers, four terminal floating nullors, Current differencing buffered amplifiers, operational trans-resistance amplifiers, Current ...
Raj Senani, D. R. Bhaskar, A. K. Singh, V. K. Singh   +3 more
openaire   +1 more source

Simulation of coupled tuned circuits using CFOAs

ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187), 2002
An active RC voltage-mode circuit that mimics the behavior at low frequency of a bandwidth-tunable bandpass filter as realized by a double-tuned circuit is converted to a current-mode circuit using commercially available current-feedback op amps. Analyses and simulations show that the new current-mode circuit can operate relatively accurately in the ...
J. Deng, P. Aronhime, B. Maundy
openaire   +1 more source

CFOA Based Negative Floating Capacitance Multiplier

2019
A floating negative capacitance multiplier circuit is proposed in the paper utilizing only two Current Feedback Operational Amplifiers (CFOAs) and total of three passive elements including two resistors for tuning the multiplication factor and a low valued integrated capacitor.
Shashwat Singh, Neeta Pandey, Rajeshwari Pandey   +2 more
openaire   +1 more source

New CFOA-based floating immittance emulators

International Journal of Electronics, 2016
ABSTRACTThis paper presents four new topologies for emulating floating immittance functions. Each circuit uses two or three current-feedback operational-amplifiers (CFOAs) and three passive elements. The proposed topologies can emulate positive/negative lossless and lossy floating inductances, and positive/negative capacitance, resistance and ...
Muhammad Taher Abuelma’atti, Sagar Kumar Dhar   +1 more
openaire   +1 more source