Quadrature sinusoidal oscillator based on log-domain high-pass and low-pass filters

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dc.contributor.authorPrommee, Pipat
dc.contributor.authorPrapakorn, Nattawit
dc.contributor.authorSomdunyakanok, Montri
dc.date.accessioned2026-08-06T10:02:56Z
dc.date.available2026-08-06T10:02:56Z
dc.date.issued2011-10-13
dc.description.abstractA log-domain current-mode quadrature sinusoidal oscillator (QSO) based on low-pass (LP) and high-pass (HP) filters is presented. The log-domain QSO is realized by using only 18 NPN transistors and 2 grounded capacitors for achieving low-power and fast response. The proposed oscillator uses a cascade connecting the LP and HP which can be electronically tuned through bias current. Frequency of oscillation can be tuned over a wide-range with a low-power supply as 2V which is suitable for IC production. The power consumption is obtained around 5.5mW at 100μA of bias current. The oscillation frequency is controlled over four decades of frequency. The total harmonic distortion of QSO at 10.63MHz is obtained around 1.25%. The proposed circuit is suitable for high-frequency applications. PSpice simulation confirms the theoretical results. © 2011 IEEE.
dc.identifier.citationMidwest Symposium on Circuits and Systems, 2011
dc.identifier.doi10.1109/MWSCAS.2011.6026490
dc.identifier.issn15483746
dc.identifier.other2-s2.0-80053630989
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/3812
dc.sourceMidwest Symposium on Circuits and Systems
dc.subjectHigh-frequency
dc.subjectHigh-pass filer
dc.subjectLog-domain filtering
dc.subjectLow-voltage
dc.subjectSinusoidal Oscillator
dc.titleQuadrature sinusoidal oscillator based on log-domain high-pass and low-pass filters
dc.typeConference Paper

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