Abstract
Radio-frequency (RF) and microwave noise suppression by using magnetic composite films on a microstrip line (MSL) was studied in the frequency range from 50 MHz to 13.5 GHz. The MSL was composed of a Cu transmission line, dielectric materials, and a Cu substrate. The Fe-Si-Al/Ni-Zn magnetic composite films were placed on the MSL, and the reflection and the transmission characteristics were investigated. We observed that RF and microwave noise suppression caused by the Fe-Si-Al/Ni-Zn magnetic composite films varied with the concentration ratio of the sendust (Fe-Si-Al) and the Ni-Zn ferrite. The frequency dependence of the power loss due to the composite films on the MSL was measured and the power loss increased at higher frequencies with increasing concentration of the sendust in the composites. The electromagnetic interference shielding efficiencies of the magnetic composite films in the far-field region are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 1534-1538 |
| Number of pages | 5 |
| Journal | Journal of the Korean Physical Society |
| Volume | 48 |
| Issue number | 6 |
| Publication status | Published - 2006 Jun |
Keywords
- EMI shielding efficiency
- Magnetic composite films
- Microstrip line
- Noise suppression
- Power loss
ASJC Scopus subject areas
- General Physics and Astronomy