Publication detail

Modified Current Differencing Unit and its Application for Electronically Reconfigurable Simple First-order Transfer Function

ŠOTNER, R. JEŘÁBEK, J. HERENCSÁR, N. ŽÁK, T. JAIKLA, W. VRBA, K.

Original Title

Modified Current Differencing Unit and its Application for Electronically Reconfigurable Simple First-order Transfer Function

Type

journal article in Web of Science

Language

English

Original Abstract

Modified current differencing unit (MCDU) and its simple filtering application are introduced in this paper. Modification of the well-known current differencing unit consists in weighted difference of both input currents controlled by adjustable current gain, controllable intrinsic resistance of both current input terminals, and availability of additional voltage terminal(s). Definition of MCDU therefore requires four adjustable parameters (B1, B2, Rp, Rn). A presented active element offers and combines benefits of electronically controllable current conveyor of second generation and current differencing unit and allows synthesis of interesting adjustable applications, which are not available by classical approaches based on simple elements. MCDU brings variability of the transfer function into the structure. It provides several transfer types without necessity of input or output node change by simple electronic tuning. A presented structure represents so-called reconnection-less reconfigurable current-mode filter for realization of all-pass, inverting high-pass, low-pass and direct transfer response. Behavioral model of the MCDU was prepared and carefully tested in filtering application. Spice simulations and measurements confirmed theoretical assumptions.

Keywords

Current differencing unit, controllable current gain, controllable intrinsic current input resistance, reconfigurability, multifunctional filter.

Authors

ŠOTNER, R.; JEŘÁBEK, J.; HERENCSÁR, N.; ŽÁK, T.; JAIKLA, W.; VRBA, K.

RIV year

2015

Released

27. 2. 2015

Publisher

Stefan cel Mare University of Suceava

Location

Faculty of Electrical Engineering and Computer Science 13, Universitatii Street Suceava - 720229 ROMANIA

ISBN

1582-7445

Periodical

ADV ELECTR COMPUT EN

Year of study

15

Number

1

State

Romania

Pages from

3

Pages to

10

Pages count

8

URL

http://dx.doi.org/10.4316/AECE.2015.01001

BibTex

@article{BUT113127,
  author="Roman {Šotner} and Jan {Jeřábek} and Norbert {Herencsár} and Tomáš {Žák} and Winai {Jaikla} and Kamil {Vrba}",
  title="Modified Current Differencing Unit and its Application for Electronically Reconfigurable Simple First-order Transfer Function",
  journal="ADV ELECTR COMPUT EN",
  year="2015",
  volume="15",
  number="1",
  pages="3--10",
  doi="10.4316/AECE.2015.01001",
  issn="1582-7445",
  url="http://dx.doi.org/10.4316/AECE.2015.01001"
}