Practical Design and Applications of Current-mode Systems

Mohan, P. V. Ananda

doi:10.1007/978-1-4612-0033-8_6

Cited by 3 publications

(4 citation statements)

References 81 publications

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“…The corresponding implementation using CCIIs as active elements 30 is demonstrated in Fig. 8, where the V =I conversion is performed by a CCII-conveyor with a resistor R VI ¼ 1=g m;VI connected at its low-impedance input (X) terminal.…”

Section: -10mentioning

confidence: 99%

Comparative Study of Discrete Component Realizations of Fractional-Order Capacitor and Inductor Active Emulators

Τσιριμώκου

Kartci

Koton

et al. 2018

J CIRCUIT SYST COMP

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Due to the absence of commercially available fractional-order capacitors and inductors, their implementation can be performed using fractional-order di®erentiators and integrators, respectively, combined with a voltage-to-current conversion stage. The transfer function of fractional-order di®erentiators and integrators can be approximated through the utilization of appropriate integer-order transfer functions. In order to achieve that, the Continued Fraction Expansion as well as the Oustaloup's approximations can be utilized. The accuracy, in terms of magnitude and phase response, of transfer functions of di®erentiators/integrators derived through the employment of the aforementioned approximations, is very important factor for achieving high performance approximation of the fractional-order elements. A comparative study of the accuracy o®ered by the Continued Fraction Expansion and the Oustaloup's approximation is performed in this paper. As a next step, the corresponding implementations of the emulators of the fractional-order elements, derived using fundamental active cells such as operational ampli¯ers, operational transconductance ampli¯ers, current conveyors, and current feedback operational ampli¯ers realized in commercially available discrete-component IC form,

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Section: -10mentioning

confidence: 99%

Comparative Study of Discrete Component Realizations of Fractional-Order Capacitor and Inductor Active Emulators

Τσιριμώκου

Kartci

Koton

et al. 2018

J CIRCUIT SYST COMP

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“…12, No. 2, April 2022: 1299-1307 1300 [16], [17]. In [9] proposes a new grounded/floating frequency-dependent negative conductance (FDNC) simulator, and a non-ideal frequency-dependent negative resistance (FDNR) simulator, based on deployment of voltage differencing transconductance amplifiers (VDTA), along with two grounded capacitances.…”

Section: Introductionmentioning

confidence: 99%

Inductanceless high order low frequency filters for medical applications

Almalah

Aldabbagh

2022

IJECE

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<p>In this paper, a designed circuit used for low-frequency filters is implemented and realized the filter is based on frequency-dependent negative resistance (FDNR) as an inductor simulator to substitute the traditional inductance, which is heavy and high cost due to the coil material manufacturing and size area. The simulator is based on an active operation amplifier or operation transconductance amplifier (OTA) that is easy to build in an integrated circuit with a minimum number of components. The third and higher-order Butterworth filter is simulated at low frequency for low pass filter to use in medical instruments and low-frequency applications. The designed circuit is compared with the traditional proportional integral controller enhanced (PIE) and T section ordinary filter. The results with magnitude and phase response were compared and an acceptable result is obtained. The filter can be used for general applications such as medical and other low-frequency filters needed.</p>

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“…The current-mode (CM) active building blocks (ABBs) are widely used in designing universal frequency filters (Mohan, 2012; Raut and Swamy, 2010; Ferri and Guerrini, 2003; Chen, 2014). The CM ABBs exhibit greater linearity, wide bandwidth, simple structure, low power consumption and enhanced dynamic range (Mohammad et al , 2017; Senani et al , 2014; Biolek et al , 2008; Faseehuddin et al , 2018) and so they are widely used in the design of signal processing systems.…”

Section: Introductionmentioning

confidence: 99%

“…However, the majority of the previously proposed filters can work only in a single mode of operation i.e. CM, voltage-mode (VM), trans-admittance-mode (TAM) and trans-impedance-mode (TIM) (Mohan, 2012; Ferri and Guerrini, 2003; Raut and Swamy, 2010; Chen, 2014; Senani et al , 2014; Sotner et al , 2019; Tsukutani, 2007). In present day intricate signal processing systems, the interaction between CM and VM circuits is required.…”

Section: Introductionmentioning

confidence: 99%

Electronically tunable mixed mode universal filter employing grounded capacitors utilizing highly versatile VD-DVCC

Faseehuddin

Herencsár

Albrni

et al. 2021

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Purpose This paper aims to achieve two main objectives. First, to introduce to the literature a new versatile active building block, namely, voltage differencing differential voltage current conveyor (VD-DVCC) for analog signal processing applications. Second, to design a novel electronically tunable mixed-mode universal filter. The designed filter provides low-pass, high-pass, band-pass, band-reject and all-pass responses in voltage-mode (VM), current-mode (CM), trans-impedance-mode (TIM) and trans-admittance-mode (TAM). Design/methodology/approach The proposed filter uses two VD-DVCCs, three resistors and two capacitors. All the capacitors used are grounded, which is advantageous from the monolithic integration point of view. The VD-DVCC is designed and validated in Cadence software using CMOS 0.18 µm process design kit from Silterra Malaysia at a supply voltage of ±1 V. Findings The proposed novel filter enjoys many attractive features including as follows: the ability to operate in all four modes, no requirement of capacitive matching, tunability of quality factor (Q) independent of pole frequency, availability of both inverting and non-inverting outputs for VM and TIM mode, high output impedance explicit current output for CM and TAM, no requirement for double/negative input signals (voltage/current) for response realization and low active and passive sensitivities. The filter is designed for a pole frequency of 5.305 MHz. The obtained results bear a close resemblance with the theoretical findings. Originality/value The proposed novel filter structure requires a minimum number of active and passive components and provides operation in all four operating modes. The filter will find application in structures of mixed-mode systems.

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Practical Design and Applications of Current-mode Systems

Cited by 3 publications

References 81 publications

Comparative Study of Discrete Component Realizations of Fractional-Order Capacitor and Inductor Active Emulators

Comparative Study of Discrete Component Realizations of Fractional-Order Capacitor and Inductor Active Emulators

Inductanceless high order low frequency filters for medical applications

Electronically tunable mixed mode universal filter employing grounded capacitors utilizing highly versatile VD-DVCC

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