Coupling between cavity resonances and characteristic modes on household appliances

Labodía, Miguel (Universidad de Zaragoza) ; Español, Jorge ; Tesa, Jorge ; Mediano, Arturo (Universidad de Zaragoza)

Resumen: Home appliances generally comprise a mechanical envelope, or enclosure, of electrically conductive material (steel, aluminum, etc.) that houses electrical and electronic circuits. That envelope typically includes all kind of apertures, openings, holes, slots, windows, etc., to connect—physically and electromagnetically—the external space with its internal space. The performance of that envelope is a key element to comply with surface current EMI/EMC (Electro-Magnetic Interference/Electro-Magnetic Compatibility) regulations for electromagnetic interference, both emissions and immunity. Here, we present a novel theoretical proposal that consists of establishing the mathematical relationship of the coupling between the resonant modes of an internal cavity (RMs) contained in a conductive body and the characteristic modes (CMs) on the external surface of its envelope through the openings that connect those external and internal spaces, and doing so by means of equivalent virtual surface currents located in those openings. The comparative results of simulations and actual measurements of immunity in an anechoic chamber (measurements originally oriented to other purposes) are presented as above-mentioned evidence of resonating modes coupling on the frequency range 40–1000 MHz. However, this theoretical proposal is novel and remains to be developed in greater depth and detail in future works.

Idioma: Inglés

DOI: 10.3390/electronics12214484

Año: 2023

Publicado en: Electronics 12, 21 (2023), 4484 [22 pp.]
ISSN: 2079-9292

Factor impacto JCR: 2.6 (2023)

Categ. JCR: COMPUTER SCIENCE, INFORMATION SYSTEMS rank: 115 / 249 = 0.462 (2023) - Q2 - T2
Categ. JCR: PHYSICS, APPLIED rank: 81 / 179 = 0.453 (2023) - Q2 - T2
Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 157 / 352 = 0.446 (2023) - Q2 - T2

Factor impacto CITESCORE: 5.3 - Electrical and Electronic Engineering (Q2) - Hardware and Architecture (Q2) - Signal Processing (Q2) - Computer Networks and Communications (Q2) - Control and Systems Engineering (Q2)

Factor impacto SCIMAGO: 0.644 - Computer Networks and Communications (Q2) - Control and Systems Engineering (Q2) - Signal Processing (Q2) - Hardware and Architecture (Q2) - Electrical and Electronic Engineering (Q2)

Financiación: info:eu-repo/grantAgreement/EUR/AEI/CPP2021-008938
Financiación: info:eu-repo/grantAgreement/EUR/AEI/TED2021-129274B-I00
Financiación: info:eu-repo/grantAgreement/ES/ISCIII/PI21-00440
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI-FEDER/PID2019-103939RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PDC2021-120898-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Tecnología Electrónica (Dpto. Ingeniería Electrón.Com.)