Detail publikace

Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability

ROONGMUANPHA, N. FASEEHUDDIN, M. HERENCSÁR, N. TANGSRIRAT, W.

Originální název

Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper proposes the design of a mixed-mode universal biquad configuration, which realizes generic filter functions in all four possible modes, namely voltage mode (VM), current mode (CM), transadmittance mode (TAM), and transimpedance mode (TIM). The filter architecture employs two voltage differencing buffered amplifiers (VDBAs), two resistors and two capacitors, and can provide lowpass (LP), bandpass (BP), highpass (HP), bandstop (BS), and allpass (AP) biquadratic filtering responses without any circuit alteration. All passive elements used are grounded, except VM. The circuit not only allows for the electronic tuning of the natural angular frequency (ωo), but also achieves orthogonal tunability of the quality factor (Q). It also provides the feature of availability of output voltage at the low-output impedance terminal in VM and TIM, and does not require inverting-type or double-type input signals to realize all the responses. Moreover, in all modes of operation, the high-Q filter can be easily obtained by adjusting a single resistance value. Influences of the VDBA nonidealities and parasitic elements are also discussed in detail. PSPICE simulations with TSMC 0.18-µm CMOS process parameters and experimental testing results with commercially available IC LT1228s have been used to validate the theoretical predictions.

Klíčová slova

active filter; mixed mode; universal biquadratic filter; voltage differencing buffered amplifier (VDBA)

Autoři

ROONGMUANPHA, N.; FASEEHUDDIN, M.; HERENCSÁR, N.; TANGSRIRAT, W.

Vydáno

15. 10. 2021

Nakladatel

MDPI

ISSN

2076-3417

Periodikum

Applied Sciences - Basel

Ročník

11

Číslo

20

Stát

Švýcarská konfederace

Strany od

1

Strany do

27

Strany počet

27

URL

https://www.mdpi.com/2076-3417/11/20/9606

Plný text v Digitální knihovně

http://hdl.handle.net/11012/201786

BibTex

@article{BUT172793,
  author="Natchanai {Roongmuanpha} and Mohammad {Faseehuddin} and Norbert {Herencsár} and Worapong {Tangsrirat}",
  title="Tunable Mixed-Mode Voltage Differencing Buffered Amplifier-Based Universal Filter with Independently High-Q Factor Controllability",
  journal="Applied Sciences - Basel",
  year="2021",
  volume="11",
  number="20",
  pages="1--27",
  doi="10.3390/app11209606",
  issn="2076-3417",
  url="https://www.mdpi.com/2076-3417/11/20/9606"
}

Dokumenty

applsci-11-09606.pdf