Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity
In this thesis, three currently available field-circuit coupled methods to determine the Mn-Zn ferrites’ dimension-independent, or intrinsic, complex permeability and permittivity are reviewed. The application criterion, the accuracy and the computational efficiency of the methods are compared. A fe...
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| Format: | Thesis |
| Language: | English |
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2008
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| Online Access: | https://hdl.handle.net/10356/13336 |
| _version_ | 1824453623961092096 |
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| author | Huang, Ruifeng |
| author2 | Zhang Daming |
| author_facet | Zhang Daming Huang, Ruifeng |
| author_sort | Huang, Ruifeng |
| collection | NTU |
| description | In this thesis, three currently available field-circuit coupled methods to determine the Mn-Zn ferrites’ dimension-independent, or intrinsic, complex permeability and permittivity are reviewed. The application criterion, the accuracy and the computational efficiency of the methods are compared. A few mathematical measures are taken to improve the currently available methods. Furthermore, to avoid the stray capacitance between the coils in the wire wound ferrite core inductor in the measurements, a set of short-ended coaxial test fixture is designed and manufactured. Experimental results of different field-circuit coupled methods are compared up to 10 MHz.
Two new field-circuit coupled methods derivative from the currently available field-circuit coupled methods are proposed. The two methods determine the two intrinsic values from the impedances of two ferrite core capacitors and two ferrite core inductors respectively. Since the two methods need only one kind of test fixtures, the measurement process is simplified in terms of the number of test fixtures used. Experimental results of the two methods are given. Advantages and limitations of the two methods are disclosed. |
| first_indexed | 2025-02-19T03:09:22Z |
| format | Thesis |
| id | ntu-10356/13336 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:09:22Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | ntu-10356/133362023-07-04T16:57:05Z Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity Huang, Ruifeng Zhang Daming School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials In this thesis, three currently available field-circuit coupled methods to determine the Mn-Zn ferrites’ dimension-independent, or intrinsic, complex permeability and permittivity are reviewed. The application criterion, the accuracy and the computational efficiency of the methods are compared. A few mathematical measures are taken to improve the currently available methods. Furthermore, to avoid the stray capacitance between the coils in the wire wound ferrite core inductor in the measurements, a set of short-ended coaxial test fixture is designed and manufactured. Experimental results of different field-circuit coupled methods are compared up to 10 MHz. Two new field-circuit coupled methods derivative from the currently available field-circuit coupled methods are proposed. The two methods determine the two intrinsic values from the impedances of two ferrite core capacitors and two ferrite core inductors respectively. Since the two methods need only one kind of test fixtures, the measurement process is simplified in terms of the number of test fixtures used. Experimental results of the two methods are given. Advantages and limitations of the two methods are disclosed. DOCTOR OF PHILOSOPHY (EEE) 2008-09-12T03:52:49Z 2008-10-20T07:25:25Z 2008-09-12T03:52:49Z 2008-10-20T07:25:25Z 2008 2008 Thesis Huang, R. (2008). Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/13336 10.32657/10356/13336 en 217 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials Huang, Ruifeng Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity |
| title | Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity |
| title_full | Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity |
| title_fullStr | Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity |
| title_full_unstemmed | Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity |
| title_short | Determination of Mn-Zn ferrites’ dimension-independent complex permeability and permittivity |
| title_sort | determination of mn zn ferrites dimension independent complex permeability and permittivity |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Electronic apparatus and materials |
| url | https://hdl.handle.net/10356/13336 |
| work_keys_str_mv | AT huangruifeng determinationofmnznferritesdimensionindependentcomplexpermeabilityandpermittivity |