| Broad-Band Design of Ferrite One-body EM Wave Absorbers for an Anechoic Chamber |
|
Dong-Il Kim1, June-Young Son2, Woo-Keun Park2, Dong-Han Park1 |
1Dept. of Radio Sciences ＆ Engineering, Korea Maritime University
2Dept. of Radio Sciences ＆ Engineering, Korea Maritime Universit |
|
|
|
|
| Abstract |
|
With the progress of the electronics industry and radio communication technology, certain problems, such as electromagnetic interference(EMI), have arisen due to the increased use of electromagnetic(EM) waves. International organizations such as CISPR, FCC, and ANSI have provided the standards for the EM wave environment and for the countermeasure of the electromagnetic compatibility(EMC). EM wave absorbers are used for constructing an anechoic chamber to test and measure EMI and electromagnetic susceptibility(EMS). In this paper, we have designed an one-body EM(electromagnetic) wave ferrite absorber, based on the equivalent material constants method for both normally and obliquely incident waves, whose absorption abilities are superior to that of the conventional ones. The fabricated absorber has a thickness of 27.68 mm and shows an absorption ability over 20 ㏈ in the frequency from 30 MHz to 6 ㎓. |
| Key words:
EMI/EMS, Ferrite Absorber, Anechoic Chamber, EMCM |
|
PDF Links
Full text via DOI
Download Citation
