DEFROSTING APPARATUS AND METHODS OF OPERATION THEREOF

A defrosting system includes an RF signal source, two electrodes proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrodes, and an impedance matching network electrically coupled along the transmission path between th...

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Bibliographic Details
Main Authors McCARVILLE, Jamison Michael, SIMON, Jérémie, SCOTT, James Eric, PIEL, Pierre Marie Jean, MONGIN, Lionel
Format Patent
LanguageEnglish
French
German
Published 02.10.2019
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Summary:A defrosting system includes an RF signal source, two electrodes proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrodes, and an impedance matching network electrically coupled along the transmission path between the output of the RF signal source and the electrodes. The system also includes power detection circuitry coupled to the transmission path and configured to detect reflected signal power along the transmission path. A system controller is configured to modify, based on the reflected signal power, values of variable capacitors of the impedance matching network to reduce the reflected signal power. The impedance matching network may be a single-ended network or a double-ended network.
Bibliography:Application Number: EP20180305360