Linearly Tunable Quadrature Oscillator Derived from LC Colpitts Structure Using Voltage Differencing Transconductance Amplifier and Adjustable Current Amplifier

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU109578" target="_blank" >RIV/00216305:26220/14:PU109578 - isvavai.cz</a>
Result on the web
<a href="http://link.springer.com/article/10.1007%2Fs10470-014-0353-6#page-1" target="_blank" >http://link.springer.com/article/10.1007%2Fs10470-014-0353-6#page-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10470-014-0353-6" target="_blank" >10.1007/s10470-014-0353-6</a>

Result language
angličtina
Original language name
Linearly Tunable Quadrature Oscillator Derived from LC Colpitts Structure Using Voltage Differencing Transconductance Amplifier and Adjustable Current Amplifier
Original language description
The paper deals with an interesting oscillator solution derived from LC Colpitts circuit structure. Electronically controllable current gain of the current amplifier is utilized for driving of oscillation condition together with two transconductances in frame of voltage differencing transconductance amplifier for adjusting of frequency of oscillation. In the proposed structure these elements replace common bipolar transistor and metal coil. Designed circuit offers important advantages, i.e. absence of metal coil, quadrature outputs, amplitudes of generated signals independent of tuning process, linear electronic control of oscillation frequency (independent of oscillation condition). Implementation of circuit for amplitude stabilization and automatic control of oscillation condition for designed circuit is simple. These benefits are not available in classical LC Colpitts structures or in many well-known third-order oscillators. The theoretical conclusions are supported by experiments with behavioral representation employing commercially available devices and also by simulations using CMOS model.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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