METHOD AND APPARATUS FOR HEATING A MEDIUM USING AN RF SIGNAL
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
May 10, 2024
filing date -
May 10, 2024
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Abstract
A method for heating a medium includes generating a first radio-frequency (RF) feed signal having a first operating frequency, incoupling the first RF feed signal into the medium so as to heat the medium, determining a first RF signal reflection, and changing the first operating frequency based on the first RF signal reflection. During a first test interval, the first operating frequency is increased. During a second test interval, the first operating frequency is reduced. The method further includes determining a second RF signal during the first test interval, determining a third RF signal reflection during the second test interval, after the second test interval has elapsed, generating a second RF feed signal with a second operating frequency, and incoupling the second RF feed signal into the medium. The second operating frequency is selected based on the first, the second, and the third RF signal reflections.
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