2018 年 138 巻 2 号 p. 124-128
This paper describes an H-plane rectangular waveguide TE10-TEn0 mode converter for microwave fryers using microwave dielectric heating. The mode converter consists of a standard rectangular waveguide and a multiple mode one for TEn0 mode microwave. The multiple mode waveguide has several metallic posts in order to match of the input port and suppress unnecessary modes. As a result of optimizing the circuit configuration of the converter based on the H-plane planar circuit approach at a center frequency of 2.45GHz, practical characteristics for microwave fryers can be realized. The validity of this design procedure is confirmed by a commercial electromagnetic simulator (ANSYS HFSS). From experimental result of oil heating by means of twelve heating units, it was possible to confirm the temperature rise up to 180 degrees and the effectiveness of this proposed Microwave fryer.
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