Pseudo-differential second-order band-reject filter using current conveyors

Koton, Jaroslav; Herencsár, Norbert; Sladok, Ondrej; Horng, Jiun‐Wei

doi:10.1016/j.aeue.2016.03.009

Cited by 18 publications

(18 citation statements)

References 15 publications

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“…The previous topology (see Fig. 3) can be easily modified for differential or pseudo-differential operation [35], [36]. Additional output terminal of the ECCII device (both polarities of current output terminals) is required.…”

Section: Modification For the Differential-mode Operationmentioning

confidence: 99%

Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique

et al. 2020

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This paper presents a new concept of a capacitance multiplier using the topology of differential voltage buffer and current conveyor, where the capacitor is connected to the current input terminal. The presented topology overcomes the typical issue known from similar solutions, i.e. creation of an undesired lossy character of the impedance plot. The added feedback path in the structure serves for minimization of the serial parasitic resistance of the current input terminal as well as the output resistance of differential voltage buffer. The electronic driving of the current and voltage internal gains of the active elements allows the adjustment of the capacitance multiplication factor as well as readjustment of the overall capacitance structure between the lossy and lossless modes of operation. The adjustment of the multiplication factor intentionally targets low ranges of gains. Despite that the multiplication factor equals or is less than 1, the range of adjustability is very wide. Simple modifications of the proposed concept leading to the differential-mode operation and enhancement of the multiplication factor are shown and explored. They were experimentally tested in more than 2 decades, from 0.03 to 5.8 nF, and controlled by single DC voltage from 0.1 to 1.0 V. The outputs of experimental measurements meet with the PSpice simulations and confirm the design validity.

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Section: Modification For the Differential-mode Operationmentioning

confidence: 99%

Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique

et al. 2020

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“…Still, provide high suppression of the common-mode signal and have lower harmonic distortions. In practice, they are often used in combination with fully-differential filters [28].…”

Section: Pseudo-differential Filtersmentioning

confidence: 99%

Systematic Design of Pseudo-Differential Frequency Filter

Sladok

Milota

Koton

et al. 2019

2019 11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

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In the paper, the theory of systematic design frequency filters is described. The result is a fourth-order pseudo-differential frequency filter operating in the voltagemode and implemented as a cascade connection of two basic second-order blocks. The filter is able to realize the low-pass filtering functions. The basic block employs three active elements and four passive elements. The filter is characterized by a minimum number of passive elements and high output impedance. Filter analysis examines the magnitude, phase, common-mode rejection ratio signal, and behavior of filters while reducing the recommended voltage. The proper functionality of the filter is verified by simulations and experimental measurements for two different interconnections.

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“…Proposed circuit in Fig. 3 has a pseudo-differential configuration, which, in accordance to [8], means that it has differential input/output terminals, but inner circuit itself is not fully symmetrical. Special features of the introduced inductance simulator in Fig.…”

Section: A Reconfigurable First-order High-pass/inverting All-pass Fmentioning

confidence: 99%

“…Division of differential systems (for example see [1]- [8]) to truly-differential and so-called pseudo-differential-mode of operation, is perfectly explained in [8] which brings new insight into this research topic. Note that complexity of pseudo-differential-mode circuits is significantly reduced in comparison to fully-differential-mode solutions due to partially grounded subparts of differential systems, i.e.…”

Section: Introductionmentioning

confidence: 99%

Pseudo-Differential Filter Design Using Novel Adjustable Floating Inductance Simulator with Electronically Controllable Current Conveyors

Šotner¹,

Herencsár²,

Jeřábek³

et al. 2017

ElAEE

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This paper presents new floating inductance simulator based on three electronically controllable current conveyors (ECCIIs) and differential voltage buffer (DVB). The inductance simulator offers simple electronic control of inductance value as well as simple control of losses by change of parameters of active elements. Based on this floating inductance simulator, example of reconnection-less reconfigurable pseudodifferential first-order filter, allowing change of transfer function between high-pass and inverting all-pass response, is discussed and studied. Moreover, the proposed structure can be easily extended to a pseudo-differential second-order band-bass filter. Behaviour of presented solutions is verified by PSpice simulations and also experimentally in frequency band up to 10 MHz. Obtained results confirmed expected features.

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Pseudo-differential second-order band-reject filter using current conveyors

Cited by 18 publications

References 15 publications

Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique

Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique

Systematic Design of Pseudo-Differential Frequency Filter

Pseudo-Differential Filter Design Using Novel Adjustable Floating Inductance Simulator with Electronically Controllable Current Conveyors

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