Detail publikace

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

ŠOTNER, R. JEŘÁBEK, J. POLÁK, L. PETRŽELA, J.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Capacitance; Resistance; Capacitors; Topology; Tuning; Impedance; Attenuation; Adjustability; capacitance multiplication; current conveyor; current gain; differential voltage buffer; electronic tuning; multiplication factor adjustment; voltage gain

Autoři

ŠOTNER, R.; JEŘÁBEK, J.; POLÁK, L.; PETRŽELA, J.

Vydáno

5. 8. 2020

Nakladatel

IEEE

Místo

PISCATAWAY

ISSN

2169-3536

Periodikum

IEEE Access

Ročník

8

Číslo

1

Stát

Spojené státy americké

Strany od

144382

Strany do

144392

Strany počet

11

URL

https://ieeexplore.ieee.org/document/9159558

Plný text v Digitální knihovně

http://hdl.handle.net/11012/195248

BibTex

@article{BUT165021,
  author="Roman {Šotner} and Jan {Jeřábek} and Ladislav {Polák} and Jiří {Petržela}",
  title="Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique",
  journal="IEEE Access",
  year="2020",
  volume="8",
  number="1",
  pages="144382--144392",
  doi="10.1109/ACCESS.2020.3014388",
  issn="2169-3536",
  url="https://ieeexplore.ieee.org/document/9159558"
}