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PROMMEE, P. MANOSITTHICHAI, N. KHATEB, F.
Originální název
Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
This research presents the active-only low-pass (LP) filter whose pole frequency and gain are independently tunable by means of the bias current manipulation. The realization of the proposed LP filter required one operational amplifier (OA), two operational transconductance amplifiers (OTA), and two MOS transistors. The multiphase sinusoidal oscillator (MSO) was subsequently realized by cascading n LP filters (n = 3) and loop-backing the output of the last LP filter to the input of the first LP filter. Simulations were carried out and the results revealed that the MSO could simultaneously achieve the low impedance voltage and high impedance current outputs without the circuit topology alteration. The frequency of oscillation (FO) and the condition of oscillation (CO) could also be electronically tuned without disturbing each other. Furthermore, the sinusoidal signal of the MSO exhibited a relatively low total harmonic distortion (THD) of around 0.8% at 2.75MHz. To verify, a prototype of the active-only LP-based MSO (n = 3) was constructed and the experiments performed. The experimental findings were agreeable with the simulation results.
Klíčová slova
Low-pass filter, Sinusoidal oscillator, tunable, low-voltage, active-only
Autoři
PROMMEE, P.; MANOSITTHICHAI, N.; KHATEB, F.
Vydáno
12. 6. 2017
Nakladatel
TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKE
Místo
Turkey
ISSN
1300-0632
Periodikum
TURK J ELECTR ENG CO
Ročník
2017 (25)
Číslo
, IF: 0.578
Stát
Turecká republika
Strany od
4326
Strany do
4340
Strany počet
15
URL
http://dx.doi.org/10.3906/elk-1702-159
BibTex
@article{BUT136490, author="Pipat {Prommee} and Narongsak {Manositthichai} and Fabian {Khateb}", title="Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application", journal="TURK J ELECTR ENG CO", year="2017", volume="2017 (25)", number=", IF: 0.578", pages="4326--4340", doi="10.3906/elk-1702-159", issn="1300-0632", url="http://dx.doi.org/10.3906/elk-1702-159" }