Secil E. Dogan;Joel T. Johnson;Robert J. Burkholder
{"title":"Improving Efficiency in Computing EM Fields Excited in a Finite-Length Cylindrical Cavity by a Longitudinal Aperture","authors":"Secil E. Dogan;Joel T. Johnson;Robert J. Burkholder","doi":"10.1109/LEMCPA.2024.3466609","DOIUrl":null,"url":null,"abstract":"An updated formulation for the electromagnetic fields produced in a finite-length circular cylindrical cavity by plane wave excitation of a thin longitudinal aperture is provided. The update replaces a triple summation over mode indices m, n, and l with a double summation over m and n using a previously shown analytical contour-integration method. A key question in the method is how to represent the quality factor \n<inline-formula> <tex-math>$(Q_{mnl})$ </tex-math></inline-formula>\n in the summation since the index l has been eliminated; two approaches are investigated for this step. Results demonstrate similar accuracy for the two approaches but different properties in terms of the frequency responses obtained.","PeriodicalId":100625,"journal":{"name":"IEEE Letters on Electromagnetic Compatibility Practice and Applications","volume":"6 4","pages":"144-148"},"PeriodicalIF":1.0000,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Letters on Electromagnetic Compatibility Practice and Applications","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10689518/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
An updated formulation for the electromagnetic fields produced in a finite-length circular cylindrical cavity by plane wave excitation of a thin longitudinal aperture is provided. The update replaces a triple summation over mode indices m, n, and l with a double summation over m and n using a previously shown analytical contour-integration method. A key question in the method is how to represent the quality factor
$(Q_{mnl})$
in the summation since the index l has been eliminated; two approaches are investigated for this step. Results demonstrate similar accuracy for the two approaches but different properties in terms of the frequency responses obtained.
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