Implementation of low-output-impedance sinusoidal oscillator and Its modification for use in filters

• Autorzy: Pawasarn Sanee , Charoenmee Angkana , Janda Thitiporn , Fungdetch Suttipong , Patimaprakorn Khunpan , Jantakun Adirek

Identyfikatory

DOI

10.15199/48.2021.08.17

Warianty tytułu

PL

Projekt niskoimpedancyjnego generatora sinusoidalnego i jego modyfikacja do zastosowania w filtrach

• Języki publikacji: EN

Abstrakty

EN

In this paper, we propose a voltage-mode sinusoidal oscillator and its modification for use in filters. The circuit comprises two commercially available ICs: LT1228, a single resistor, and only two grounded capacitors. The sinusoidal signals of the proposed circuit are generated with a 90° shift at low-output-impedance ports. The condition and frequency of the oscillation can be freely controlled by setting the transconductance gains. Furthermore, the frequency and amplitude of the signals can be directly controlled by adding external resistors to adjust the voltage amplifier. In addition, our proposed sinusoidal oscillator can be slightly modified for operation with low-pass, band-pass, and high-pass filters. The quality factor can be easily and independently set by adjusting the resistor values. The implementation is used to improve the theoretical analysis. All results are in accordance with the theoretical analysis.

PL

W pracy proponujemy napięciowy generator sinusoidalny i jego modyfikację do zastosowania w filtrach. Obwód składa się z dwóch dostępnych na rynku układów scalonych: LT1228, pojedynczego rezystora i tylko dwóch uziemionych kondensatorów. Sygnały sinusoidalne proponowanego układu są generowane z przesunięciem o 90° na portach o niskiej impedancji wyjściowej. Stan i częstotliwość oscylacji można dowolnie kontrolować, ustawiając wzmocnienia transkonduktancji. Ponadto częstotliwość i amplitudę sygnałów można bezpośrednio kontrolować poprzez dodanie zewnętrznych rezystorów do regulacji wzmacniacza napięcia. Proponowany przez nas generator sinusoidalny można nieznacznie zmodyfikować do pracy z filtrami dolnoprzepustowymi, pasmowoprzepustowymi i górnoprzepustowymi. Współczynnik jakości można łatwo i niezależnie ustawić, dostosowując wartości rezystorów. Implementacja służy do usprawnienia analizy teoretycznej. Wszystkie wyniki są zgodne z analizą teoretyczną.

Słowa kluczowe

EN

low-output-impedance; voltage mode; sinusoidal oscillator; low-pass filter; band-pass filter; high-pass filter; LT1228 IC

PL

generator sinusoidalny; wzmacniacz transkonduktancyjny; filtr

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2021
• Tom: R. 97, nr 8
• Strony: 96--103
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Pawasarn Sanee

• Rajamangala University of Technology Isan, Thailand

• https://orcid.org/0000-0002-8474-7413

autor

Charoenmee Angkana

• Rajamangala University of Technology Isan, Thailand

• https://orcid.org/0000-0003-2475-6403

autor

Janda Thitiporn

• Rajamangala University of Technology Isan, Thailand

• https://orcid.org/0000-0002-6976-686X

autor

Fungdetch Suttipong

• Rajamangala University of Technology Isan, Thailand

• https://orcid.org/0000-0002-2312-735X

autor

Patimaprakorn Khunpan

• Rajamangala University of Technology Isan, Thailand

• https://orcid.org/0000-0002-3728-9499

autor

Jantakun Adirek

• Rajamangala University of Technology Isan, Thailand

• https://orcid.org/0000-0001-8474-9315

Bibliografia

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• [23] Wang S F, Chen H P, Ku Y, Zhong M X, Voltage-mode multifunction biquad filter and its application as fully-uncoupled quadrature oscillator based on current-feedback operational amplifiers, Sensors, 20 (2020), 2-25.
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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).