Low-Sensitivity Current-Mode Active-RC Filters Using Impedance Tapering

Jurisic, Drazen; Mijat, Neven; Moschytz, G.S.

doi:10.1109/iscas.2005.1465334

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…Symbol diagram of the CFOA is shown in Figure 1. With the help of CFOA we can achieve the same characteristics of ladder based filter as they were in the original circuit and excluding the inductors [4]- [6]. Moreover, CFOA provides faster response and can operate at high frequency at high gain.…”

Section: Introductionmentioning

confidence: 98%

CFOA Based Band Pass and Band Stop Ladder Filter—A New Configuration

Sinha¹,

Sharma²,

Agarwal³

et al. 2016

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A new technique for the conversion of ladder based filter into CFOA based filter has been proposed. The technique uses signal flow graph and converts the existing LC ladder based filter into band pass & band stop configurations. The design of band pass and band stop filter has been realized using the proposed technique. The proposed configuration is implemented using CFOA as an active device and all the capacitors are grounded. CFOA based circuits have greater linearity, high dynamic rate, high slew rate and high signal bandwidth. Simulation has been carried out using simulation software P Spice (v10.1). The simulation results have been demonstrated and discussed.

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Section: Introductionmentioning

confidence: 98%

CFOA Based Band Pass and Band Stop Ladder Filter—A New Configuration

Sinha¹,

Sharma²,

Agarwal³

et al. 2016

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“…Additionally, they demonstrate considerable speed, bandwidth and accuracy performances [16]. The application of filters and oscillators in communication circuits needs extended high frequency performance in fully integrated circuit form [17], [18], [19] and [20]. Circuit designers began to search for a more suitable active element in order to provide the necessary gain without imposing severe frequency limitations due to the fixed gain-bandwidth product [21] and [22].…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of the circuit architecture of the basic CFOA and testing techniques

Tammam

Hayatleh

Barker

et al. 2016

International Journal of Electronics

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This paper examines the closed-loop characteristics of the basic CFOA, and in particular, the dynamic response. Additionally, it also examines the design and advantages of the CFOA regarding its ability to provide a significantly constant closed-loop bandwidth for closed-loop voltage gain. Secondly, the almost limitless slewrate provided by the class AB input stage that makes it superior to the VOA counterpart. Additionally; this paper also concerns the definitions and measurements of the terminal parameters of the CFOA, regarded as a 'black box'. It does not deal with the way that these parameters are related to the properties of the active passive and active components of a particular circuit configuration. Simulation is used in terminal parameter determination: this brings with it the facility of using test conditions that would not normally prevail in a laboratory test on silicon implementations of the CFOAs. Thus, we can apply 1mA and 1mV test signals from, respectively, infinite and zero source impedances that range in frequency from d.c to some tens of GHz. Also, we assume the existence of resistors with identical Ohmic value and very high value ideal capacitors. Where appropriate, practical test methods are referred to physical laboratory prototypes.

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“…CM filters have received a wide attention due to their wide bandwidth, low-voltage operation and simple implementation of signal operations, such as addition and subtraction [25][26][27]. Current feedback operational amplifier (CFOA) [28][29][30]-based CM circuits have received considerable attention in many filtering and signal processing applications.…”

Section: Introductionmentioning

confidence: 99%