Microwave heating apparatus
AssigneeSanyo Electric Co., Ltd.
InventorYoshio Yasuoka
Life of this patent
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Abstract
A microwave heating apparatus comprising a stripline receiving a supply of a microwave from a coaxial line. The stripline comprises a center conductor formed on a dielectric base plate, the rear surface of which is formed with a ground conductor, wherein a plurality of slits are arranged distributed in the propagating direction of the microwave on the center conductor or ground conductor, thereby to form a ladder circuit portion. A material being heated such as a paper sheet is transferred on the ladder circuit portion, while the same is heated by the microwave leaked through the slits of the center conductor or the ground conductor.
Claims25
A microwave heating apparatus for heating sheet-like materials, comprising:
- first microstripline means having a center conductor and at least one ground conductor having a dielectric layer therebetween, at least one of said center conductor and said ground conductor including a ladder delay circuit portion,
- microwave supply means for supplying a microwave to said microstripline means, and
- means for bringing a material to be heated to the vicinity of said ladder delay circuit portion.
A microwave heating apparatus, comprising:
- a microstripline means including a center conductor and a ground conductor;
- a slot radiator portion having a plurality of slots formed on said ground conductor;
- means for supplying a microwave to said microstripline means;
- and
- means for bringing a material to be heated to the vicinity of said slot radiator portion.
Dependencies are inferred from the claim text.