Detail publikace

Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application

Originální název

Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application

Anglický název

Active-only variable-gain low-pass filter for dual-mode multiphase sinusoidal oscillator application

Jazyk

en

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.

Anglický 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.

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",
  annote="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.",
  address="TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKE",
  chapter="136490",
  doi="10.3906/elk-1702-159",
  howpublished="print",
  institution="TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKE",
  number=", IF: 0.578",
  volume="2017 (25)",
  year="2017",
  month="june",
  pages="4326--4340",
  publisher="TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKE",
  type="journal article in Web of Science"
}