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ŠOTNER, R. PETRŽELA, J. JEŘÁBEK, J. LANGHAMMER, L. POLÁK, J. JAIKLA, W. TUNTRAKOOL, S.
Original Title
Integer- and Fractional-Order VCO Using Non-Inertial Amplitude Stabilization and Modern Active Elements
Type
journal article in Web of Science
Language
English
Original Abstract
This paper introduces design of the linearly tunable quadrature voltage-controlled oscillator (VCO) using modern off-the-shelf active elements suitable for the design of electronically adjustable applications. The simplified topology was achieved using non-inertial stabilization of amplitude. It allows targeting adjustability of the oscillation frequency only into lossless integrator part of the topology. This arrangement simplifies the design and the tenability also. Derived symbolical expressions indicate that gain adjustment of used amplifiers (that are still in single path) does not influence amplitude and phase shift ratio of generated waveforms, which is a beneficial feature. The performances of the circuit are tested experimentally in band of units of MHz and results confirmed expected behavior. Initial study of the oscillator with fractional-order capacitors is presented and discussed. Results are supported by laboratory measurements.
Keywords
Diamond transistors; Electronic adjusting; Fractional-order; Modern active devices; Quadrature output; Tuning; Voltage controlled oscillator; Voltage-mode multipliers
Authors
ŠOTNER, R.; PETRŽELA, J.; JEŘÁBEK, J.; LANGHAMMER, L.; POLÁK, J.; JAIKLA, W.; TUNTRAKOOL, S.
Released
25. 4. 2020
Publisher
Kaunas University of Technology
Location
KAUNAS
ISBN
1392-1215
Periodical
Elektronika Ir Elektrotechnika
Year of study
26
Number
2
State
Republic of Lithuania
Pages from
42
Pages to
47
Pages count
6
URL
http://eejournal.ktu.lt/index.php/elt/article/view/25903
Full text in the Digital Library
http://hdl.handle.net/11012/193235
BibTex
@article{BUT164209, author="Roman {Šotner} and Jiří {Petržela} and Jan {Jeřábek} and Lukáš {Langhammer} and Josef {Polák} and Winai {Jaikla} and Sunti {Tuntrakool}", title="Integer- and Fractional-Order VCO Using Non-Inertial Amplitude Stabilization and Modern Active Elements", journal="Elektronika Ir Elektrotechnika", year="2020", volume="26", number="2", pages="42--47", doi="10.5755/j01.eie.26.2.25903", issn="1392-1215", url="http://eejournal.ktu.lt/index.php/elt/article/view/25903" }