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Cited 12 time in webofscience Cited 19 time in scopus
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Kilowatt-Level Power-Controlled Microwave Applicator With Multiple Slotted Waveguides for Improving Heating Uniformity

Authors
Ahn, Seong-HyeopJeong, Chang-HyunLim, Dong-MinLee, Wang-Sang
Issue Date
Jul-2020
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Electromagnetic waveguides; Microwave theory and techniques; Electromagnetic heating; Applicators; Microwave FET integrated circuits; Microwave integrated circuits; Heating uniformity; kilowatt level; microwave applicator; multiple slotted waveguides; power-controlled
Citation
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, v.68, no.7, pp.2867 - 2875
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Volume
68
Number
7
Start Page
2867
End Page
2875
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/6458
DOI
10.1109/TMTT.2020.2977645
ISSN
0018-9480
Abstract
In this article, we propose a kW-level 2.45-GHz microwave applicator for improving heating uniformity. In a conventional microwave applicator, the heating material has low heating uniformity due to various hot and cold spots caused by multiple reflections in the cavity. We propose a power-controlled microwave applicator with multiple slotted waveguides to reduce the hot and cold spots and improve the heating uniformity in the microwave heating process. The proposed microwave applicator consists of three waveguides. Each waveguide consists of longitudinal or transversal slots. To improve heating uniformity in the proposed applicator, we used the power switching method. The input power applied to each waveguide is optimized according to the peak magnitude of the electric field of each waveguide. Conclusively, compared with the conventional microwave applicator, the proposed power-controlled microwave applicator with multiple slotted waveguides improves the heating uniformity up to approximately 67%.
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