Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System
The equivalent dipole array is an effective method for emission source modeling to solve practical electromagnetic engineering problems. In this paper, a spherical equivalent dipole array method (SEDAM) is proposed to model practical and complex electronic systems. Unlike the planar equivalent dipol...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8782103/ |
| _version_ | 1818642824012234752 |
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| author | Jing Nie Shunchuan Yang Donglin Su |
| author_facet | Jing Nie Shunchuan Yang Donglin Su |
| author_sort | Jing Nie |
| collection | DOAJ |
| description | The equivalent dipole array is an effective method for emission source modeling to solve practical electromagnetic engineering problems. In this paper, a spherical equivalent dipole array method (SEDAM) is proposed to model practical and complex electronic systems. Unlike the planar equivalent dipole array method (PEDAM), SEDAM is derived in the spherical coordinate system and is more suitable for large electromagnetic equipments. In addition, SEDAM can achieve accurate emission prediction around electronic systems of arbitrary structures, where PEDAM is not easy to be used. We first derived the analytical relationship between magnetic fields and magnetic dipole moments in the spherical coordinate system. To model the complex systems, several equivalent dipoles are properly placed on a spherical surface which encloses the equipment under test (EUT). By superposition of the fields generated by all the equivalent dipoles, the equivalent relational matrix is constructed and the weights for each dipole are solved. Then, the weighted dipole array can be used to predict the emission fields at desired locations. The proposed method is first verified through a numerical simulation. The results show that the proposed SEDAM outperforms the PEDAM in terms of accuracy. It is further validated through a measurement. The measurement results show that SEDAM can model the practical and complex electronic systems and predict their electromagnetic emission with acceptable accuracy. |
| first_indexed | 2024-12-16T23:49:11Z |
| format | Article |
| id | doaj.art-4108c40c38634125b66c707050b5454d |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T23:49:11Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-4108c40c38634125b66c707050b5454d2022-12-21T22:11:23ZengIEEEIEEE Access2169-35362019-01-01711175611176610.1109/ACCESS.2019.29320908782103Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic SystemJing Nie0Shunchuan Yang1Donglin Su2https://orcid.org/0000-0003-4395-0682School of Electronic and Information Engineering, Institute of Electromagnetic Compatibility Technology, Beihang University, Beijing, ChinaSchool of Electronic and Information Engineering, Institute of Electromagnetic Compatibility Technology, Beihang University, Beijing, ChinaSchool of Electronic and Information Engineering, Institute of Electromagnetic Compatibility Technology, Beihang University, Beijing, ChinaThe equivalent dipole array is an effective method for emission source modeling to solve practical electromagnetic engineering problems. In this paper, a spherical equivalent dipole array method (SEDAM) is proposed to model practical and complex electronic systems. Unlike the planar equivalent dipole array method (PEDAM), SEDAM is derived in the spherical coordinate system and is more suitable for large electromagnetic equipments. In addition, SEDAM can achieve accurate emission prediction around electronic systems of arbitrary structures, where PEDAM is not easy to be used. We first derived the analytical relationship between magnetic fields and magnetic dipole moments in the spherical coordinate system. To model the complex systems, several equivalent dipoles are properly placed on a spherical surface which encloses the equipment under test (EUT). By superposition of the fields generated by all the equivalent dipoles, the equivalent relational matrix is constructed and the weights for each dipole are solved. Then, the weighted dipole array can be used to predict the emission fields at desired locations. The proposed method is first verified through a numerical simulation. The results show that the proposed SEDAM outperforms the PEDAM in terms of accuracy. It is further validated through a measurement. The measurement results show that SEDAM can model the practical and complex electronic systems and predict their electromagnetic emission with acceptable accuracy.https://ieeexplore.ieee.org/document/8782103/Electromagnetic compatibilityequivalenceinterference source locationradiation sourcespherical dipole array |
| spellingShingle | Jing Nie Shunchuan Yang Donglin Su Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System IEEE Access Electromagnetic compatibility equivalence interference source location radiation source spherical dipole array |
| title | Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System |
| title_full | Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System |
| title_fullStr | Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System |
| title_full_unstemmed | Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System |
| title_short | Spherical Equivalent Dipole Array Theory and Its Applications to Complex Electromagnetic System |
| title_sort | spherical equivalent dipole array theory and its applications to complex electromagnetic system |
| topic | Electromagnetic compatibility equivalence interference source location radiation source spherical dipole array |
| url | https://ieeexplore.ieee.org/document/8782103/ |
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