Log-domain All-pass Filter-based Multiphase Sinusoidal Oscillators
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Date
2013-04
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
Log-domain current-mode multiphase sinusoidal oscillators based on all-pass filters are presented in this paper. The first-order differential equation is used for obtaining inverting and non-inverting all-pass filters. The proposed oscillators are realized by all-pass filters which can be electronically tuned their natural frequency and stage gain by adjusting the bias currents. Each all pass filter contains 10 NPN transistors and a grounded capacitor. The validated BJT model which used in SPICE simulation operated by a single power supply as low as 2.5 V. The frequency of oscillation can be controlled over four decades. The total harmonic distortions of these MSO at frequency 56.67 MHz and 54.44 MHz, obtained around 0.52% and 0.75%, respectively. The proposed circuits enable fully integrated in telecommunication systems and also suit to high-frequency applications. Nonideality studies and PSpice simulation results are included to confirm the theory.
Description
Citation
Radioengineering. 2013, vol. 22, č. 1, s. 14-23. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2013/13_01_0014_0023.pdf
http://www.radioeng.cz/fulltexts/2013/13_01_0014_0023.pdf
Document type
Peer-reviewed
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Published version
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Language of document
en