Frequency-Dependent FDTD Modeling of a Ferrite Core Attached to a Wire.
|
Accession number;03A0049493
|
| Title;Frequency-Dependent FDTD Modeling of a Ferrite Core Attached to a Wire. |
| Author;
TANAKA MOTOSHI
(Akita Univ., Facutity of Engineering and Resource Sci, JPN)
SONE SHUSAKU
(Akita Univ., Facutity of Engineering and Resource Sci, JPN)
INOUE HIROSHI
(Akita Univ., Facutity of Engineering and Resource Sci, JPN)
|
Journal Title;IEICE Transactions on Communications (Japanese Edition)
|
Journal Code:S0622C
|
ISSN:1344-4697
|
|
VOL.J86-B;NO.1;PAGE.85-92(2003)
|
| Figure&Table&Reference;FIG.11, TBL.2, REF.14 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;To investigate control effects of unnecessary electromagnetic waves (electromagnetic noises) based on ferrite cores mounted onto wires, here was proposed a frequency dependent finite-difference time-domain (FD-FDTD) algorithm considering permeability dispersion curve of ferrite well agreed with test results ranging to wide frequency band. By comparing them with theoretical values of reflection coefficient when plane waves input into ferrite medium vertically, its validity was shown. As an example of simple loop circuit mounted a ferrite core to a wire, negative loaded impedance (NLI) and electromagnetic field distribution (EMFD) near the ferrite were obtained. As a result, FD-FDTD value of NLI showed good agreement with equivalent circuit analytical value. And, as EMFD had an effect to control electromagnetic noise near the wire behind the ferrite core from a view of signal source, it was elucidated that on a portion mounted by ferrite, near electromagnetic field was larger than that of no-mounting. |
|
|
|
Related Articles;
|
|
