Results 151 to 160 of about 612 (188)
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Realizations of Grounded Negative Capacitance Using CFOAs
Circuits, Systems, and Signal Processing, 2010The paper presents new realizations of grounded negative capacitance, using current feedback operational amplifiers (CFOAs), two resistors and one capacitor. All the proposed realizations are canonic in the number of passive components and do not require any critical component matching condition.
Abhirup Lahiri, Maneesha Gupta
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2013
This chapter deals with the application of CFOAs in filter design. We first present a number of multifunction voltage-mode and current-mode biquad filter topologies employing two to five CFOAs choosing from a large number of existing configurations.
Raj Senani +3 more
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This chapter deals with the application of CFOAs in filter design. We first present a number of multifunction voltage-mode and current-mode biquad filter topologies employing two to five CFOAs choosing from a large number of existing configurations.
Raj Senani +3 more
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Design of Inverse Filters Using CFOAs
2021This research paper proposes a newly discovered current feedback operational amplifier (CFOA) based multifunction inverse filter. This configuration employs 2 CFOAs, 3/4 resistors and 2/3 capacitors to realize inverse low pass filter (ILPF), inverse band pass filter (IBPF) and inverse high pass filter (IHPF).
Sahil Kumar Jha +3 more
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New CFOA-based sinusoidal oscillators
International Journal of Electronics, 1997Novel CFOA-based sinusoidal oscillator circuits are presented. Two of the proposed circuits enjoy independent control of the frequency of oscillation and the condition of oscillation. Experimental results are included.
MUHAMMAD TAHER ABUELMA'ATTI +1 more
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CMOS CFOA Based Quadrature Oscillator
2020 International Conference on Electronics and Sustainable Communication Systems (ICESC), 2020The work of Current feedback operational amplifier (CFOA) based Oscillator design is presented in this paper. The CFOA is comprised of the second-generation current conveyor (CCII) and an operational amplifier. This work focuses on working with current mode blocks rather than making use of conventional voltage-mode block because of their advantages ...
Sneha Tandel +2 more
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Inverse active filters employing CFOAs
Electrical Engineering, 2009New configurations for realizing inverse lowpass, inverse bandpass, inverse highpass and inverse bandreject filters using commercially available current feedback op-amps (CFOA) with an accessible z-terminal such as AD844 are presented. The workability of the proposed circuits has been confirmed by experimental results employing AD844 type CFOAs.
S. S. Gupta +3 more
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Modified CFOA, its transpose, and applications
International Journal of Circuit Theory and Applications, 2015SummaryIt is shown that the recently‐proposed modified current feedback operational amplifier (MCFOA) is quite a versatile element in that given a realization for a system function using MCFOAs, we can obtain three alternate realizations using the same MCFOA but by appropriately connecting the y, x, w, and z terminals of the MCFOA to the remaining part
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Critical review of the circuit architecture of CFOA
International Journal of Electronics, 2013This study investigates the closed-loop performance of the basic current feedback operational amplifier (CFOA), with particular emphasis on its dynamic response. It also focuses on the design, performance and advantages of the CFOA in its ability to provide a substantially constant closed-loop bandwidth for closed-loop voltage gain.
A.A. Tammam +4 more
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Programmable analog array of fractional-order filters with CFOAs
2017 40th International Conference on Telecommunications and Signal Processing (TSP), 2017A novel Programmable Analog Array of fractional-order filters is proposed in this paper. It is constructed from an active core which is implemented using Current Feedback Operational Amplifiers as active elements. The scheme offers the realization of lowpass, highpass, bandpass, and bandstop fractional-order filter functions of various orders, and this
Georgia Tsirimokou +4 more
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New CFOA-Based Shadow Banpass Filter
2016 International Conference on Electronics, Information, and Communications (ICEIC), 2016This 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
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