Enhancing microwave heating uniformity using reconfigurable diffractive beamforming surface

Conventional microwave oven suffers nonuniform electric field distribution due to standing wave inside the cavity, requiring improved heating uniformity. Multimode ovens, which are regarded as the most popular method, suffer from relatively limited accuracy and dependency on experimental validations...

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Bibliographic Details
Published inMicrowave and optical technology letters Vol. 64; no. 1; pp. 47 - 53
Main Authors Kim, Daehyeon, Kim, Minhyeock, Youn, Youngno, Chang, Suho, Lee, Cheonga, Kim, Jeongwon, Oh, Bukuk, Hong, Wonbin
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 01.01.2022
Wiley Subscription Services, Inc
Subjects
beam steering
Beamforming
Electric fields
Electromagnetic radiation
heat uniformity
Heating
Microwave absorbers
microwave applicator
Microwave heating
Ovens
reconfigurable diffractive surface
Reconfiguration
Standing waves
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Summary:Conventional microwave oven suffers nonuniform electric field distribution due to standing wave inside the cavity, requiring improved heating uniformity. Multimode ovens, which are regarded as the most popular method, suffer from relatively limited accuracy and dependency on experimental validations. In this paper, a new class of microwave heating methodology is proposed to achieve heating uniformity improvements through the suppression of undesired standing waves. Microwave absorbers and focusing of electromagnetic waves using reconfigurable diffractive surface are devised, validated, and discussed. Numerical and experimental studies ascertain that the heat uniformity is improved by more than three factors compared to conventional microwave applicators, indicating its potential application and feasibilities.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.33037