Volume 4 Number 1 (Jan. 2014)
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IJBBB 2014 Vol.4(1): 57-59 ISSN: 2010-3638
DOI: 10.7763/IJBBB.2014.V4.310

Electronically Controllable Current-Mode Multiphase Sinusoidal Oscillator for Biomedical Tissue Measurement Systems

S. Siripongdee, P. Suwanjan, S. Tuntrakool, and W. Jaikla
Abstract—The design of current-mode multiphase sinusoidal oscillator (MSO) for biomedical tissue measurement system is presented. The odd phase system can be realised using current controlled current differencing transconductance amplifier (CCCDTA)-based lossy integrators. The condition of oscillation and frequency of oscillation can be controlled electronically and independently through adjusting the current of the CCCDTA. The high output impedances facilitate easy driving an external load without additional current buffers. The proposed MSO provides odd phase signals that are equally spaced in phase and equal amplitude. The circuit requires one CCCDTA and one grounded capacitor per phase without external resistor and additional current amplifier. The results of PSPICE simulations using BJT CCCDTA are included to verify theory.

Index Terms—CCCDTA, multiphase sinusoidal oscillator, integrated circuit.

The authors are with Department of Engineering Education, Faculty of Industrial Education, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand (e-mail: kssurapo@kmitl.ac.th, kspeeraw@kmitl.ac.th, ktsunti@kmitl.ac.th, kawinai@kmitl.ac.th).

 

Cite: S. Siripongdee, P. Suwanjan, S. Tuntrakool, and W. Jaikla, "Electronically Controllable Current-Mode Multiphase Sinusoidal Oscillator for Biomedical Tissue Measurement Systems," International Journal of Bioscience, Biochemistry and Bioinformatics vol. 4, no. 1, pp. 57-59, 2014.

General Information

ISSN: 2010-3638
Frequency: Bimonthly (2011-2015); Quarterly (Since 2016)
DOI: 10.17706/IJBBB
Editor-in-Chief: Prof. Ebtisam Heikal 
Abstracting/ Indexing: Electronic Journals Library, Chemical Abstracts Services (CAS), Google Scholar, and ProQuest.
E-mail: ijbbb@iap.org
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