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Electronically controlled multiphase sinusoidal oscillators using current amplifiers
Author(s) -
Souliotis George,
Psychalinos Costas
Publication year - 2009
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.486
Subject(s) - resistor , capacitor , topology (electrical circuits) , oscillation (cell signaling) , amplifier , current (fluid) , electronic component , operational amplifier , electronic engineering , electrical engineering , computer science , engineering , control theory (sociology) , voltage , control (management) , genetics , cmos , biology , artificial intelligence
A novel current‐mode multiphase oscillator topology is introduced in this letter. This is realized by employing current amplifiers and only grounded capacitors. Attractive characteristics offered by the new topology are the electronic adjustment of the oscillation frequency, the absence of passive resistors, and the requirement of only grounded capacitors. Comparison with the corresponding already published current follower based structure shows that the proposed topology has better performance in terms of the number of required active elements, the employment of passive resistors, and the ability for electronic adjustment of the oscillation frequency. Copyright © 2008 John Wiley & Sons, Ltd.