Chaotic Colpitts Oscillator for the Ultrahigh Frequency Range

A. Tamasevicius, G. Mykolaitis, S. Bumeliene, A. Baziliauskas, R. Krivickas, Erik Lindberg

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

PSpice simulation and experimental results demonstrating chaotic performance of the Colpitts oscillator in the ultrahigh frequency (300–1000 MHz) range are presented.Various combinations of the resonance tank parameters are considered to achieve a fundamental frequency as high as possible. Simulations indicate that chaotic oscillations observed experimentally at higher frequencies, e.g., at about 1000MHz are caused by parasites, like wiring inductances, loss resistance appearing due to skin effect, and collector-emitter capacitance of the transistor. Reliable and reproducible chaos can be generated at fundamental frequencies up to about 500MHz with the single-stage Colpitts oscillator using the microwave 9 GHz bipolar junction transistors.
Original languageEnglish
JournalNonlinear Dynamics
Volume46
Pages (from-to)159-156
ISSN0924-090X
DOIs
Publication statusPublished - 2006

Keywords

  • colpitts oscillator
  • chaos
  • ultrahigh frequency
  • nonlinear dynamics
  • electronics

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