Thick metal microwave susceptor
AssigneeThe Pillsbury Company
InventorsPeter S. Pesheck, Ronald R. Lentz
Life of this patent
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Abstract
A microwave susceptor structure includes a first thick metal layer, and a second matching layer coupled to the thick metal layer. The matching layer is chosen to couple a desired amount of power into the thick metal layer.
Claims32
An apparatus for converting microwave energy in a microwave oven into thermal energy, the microwave energy being conveyed by microwaves having a wave impedance, the apparatus comprising:
- a thick metal having a thickness of at least approximately three skin depths;
- and
- matching means, coupled to the thick metal, for matching a first impedance corresponding to the thick metal with the wave impedance sufficiently that the thick metal accordingly absorbs a controlled amount of incident microwave energy.
A microwave susceptor suitable for use in a microwave oven, the microwave oven being capable of generating microwaves and transmitting microwave energy having a wave impedance, the microwave susceptor comprising:
- a thick metal having a thickness of at least approximately three skin depths;
- and
- matching means, coupled to the thick metal, for impedance matching incident microwave energy into the thick metal to couple a controlled amount of power into the thick metal.
A microwave susceptor structure, comprising:
- an electrically thick metal layer having a thickness of at least approximately three skin depths;
- and
- a dielectric layer, coupled to the electrically thick metal layer, the dielectric layer having an impedance that sufficiently matches a first impedance corresponding to the electrically thick metal layer to a wave impedance corresponding to a microwave having a frequency in a range of 2300 to 2600 Megahertz so that a controlled amount of power transmitted by the microwave is coupled into the electrically thick metal layer.
Dependencies are inferred from the claim text.