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US 8,389,916 B2Granted
Electromagnetic heating
AssigneeGoji Limited
InventorsEran Ben-Shmuel, Alexander Bilchinsky
Life of this patent
Estimating the term…
Abstract
An apparatus for applying RF energy to an object, including at least one slower-scanning, frequency source and at least one faster-scanning frequency source, and a controller which sweeps a range of frequencies using the faster-scanning source to measure RF absorption and controls the slower-scanning frequency source based on the sweep.
Claims14
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- and
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object,
- wherein said second frequency source is a calibrated source, and
- wherein said controller is configured to calibrate when said second source is not applying RF energy to said object.
3 more elements
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- and
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object;
- and
- a plurality of output channels configured to apply RF energy,
- wherein each of said output channels has its own antenna and the output channels are configured to apply RF energy to said object simultaneously.
4 more elements
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object;
- and
- a plurality of output channels configured to apply RF energy,
- wherein said second frequency source is shared by said plurality of channels.
3 more elements
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object;
- and
- a plurality of output channels configured to apply RF energy,
- wherein each said channel includes one of said at least one first source.
3 more elements
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- and
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object,
- wherein said second, faster-scanning, frequency source is configured to be in operation and connected to a radiating output less than 15% of the time that the first, slower-scanning, frequency source is in operation.
2 more elements
An RF heater, comprising:
- (a) a faster-scanning frequency source;
- (b) a slower-scanning frequency source;
- and
- (c) circuitry configured to calibrate said faster-scanning frequency source using said slower-scanning frequency source.
1 more element
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- and
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object,
- wherein said controller is configured to sweep the range of frequencies using the second, faster-scanning frequency source to measure at least one of:
- a response of the object to the RF heater;
- energy absorption efficiency;
- input reflection coefficients;
- or
- transfer coefficients.
7 more elements
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- and
- a controller which sweeps a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweeps controls said first slower-scanning frequency source to apply RF energy to said object,
- wherein said controller is configured to control the first and second frequency sources, such that said faster-scanning frequency source operates for less than 10% of the total heating time.
2 more elements
An apparatus for applying RF energy to an object, comprising:
- at least one first, slower-scanning, frequency source;
- at least one second, faster-scanning, frequency source;
- and
- a controller configured to sweep a range of frequencies using the second, faster-scanning frequency source to measure at least one RF interaction with the object and based on a measurement result of said sweep controls said first slower-scanning frequency source to apply RF energy to said object,
- wherein said controller is configured to control the first and second frequency sources, such that said faster-scanning frequency source accounts for less than 10% of the energy output of the RF heater.
2 more elements
Dependencies are inferred from the claim text.