publication . Article . 2012

An electronically tunable current-mode quadrature oscillator using PCAs

Norbert Herencsar;
Open Access
  • Published: 10 Apr 2012 Journal: International Journal of Electronics, volume 99, pages 609-621 (issn: 0020-7217, eissn: 1362-3060, Copyright policy)
  • Publisher: Informa UK Limited
  • Country: Czech Republic
Abstract
The paper presents a new realization of active RC sinusoidal oscillator with electronically tunable condition and frequency of oscillation. As compared to the class of three resistors, two capacitors (3R-2C) based canonic oscillators, the proposed circuit here uses only two resistors and two capacitors as the passive components and still provides non-interactive tuning laws for the condition of oscillation (CO) and the frequency of oscillation (FO). The proposed circuit employs new bipolar programmable current amplifier (PCA) as the active building block and is capable of simultaneously providing two explicit quadrature current outputs. SPICE simulation results ...
Subjects
arXiv: Computer Science::Hardware ArchitectureComputer Science::Emerging Technologies
ACM Computing Classification System: Hardware_INTEGRATEDCIRCUITSHardware_PERFORMANCEANDRELIABILITYHardware_LOGICDESIGN
free text keywords: active RC circuits, current-mode (CM), electronically tunable quadrature oscillator (ETQO), programmable current amplifier (PCA), Electrical and Electronic Engineering
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