Abstract
Integrated-type electromagnetic noise suppressors, based on a coplanar wave-guide transmission line, are investigated, incorporated with a SiO2 dielectric and a nanogranular Co-Fe-Al-O magnetic thin film. The length of the magnetic thin film is varied from 2 to 15 mm, while its thickness and width are fixed at 1 and 50 μm, respectively. In the measurement frequency range of 0.1-20 GHz, no obvious resonance is seen at the shortest length of the magnetic thin film, but resonance behavior occurs at larger length. A very clear resonance occurs at the largest length of 15 mm, where the resonance frequency is ∼10 GHz and the signal attenuation is as large as -20 dB. The observed resonance frequency is much higher than the ferromagnetic resonance frequency and the main mechanism of loss generation is found to be L-C resonance.
| Original language | English |
|---|---|
| Pages (from-to) | 2563-2565 |
| Number of pages | 3 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 310 |
| Issue number | 2 SUPPL. PART 3 |
| DOIs | |
| Publication status | Published - 2007 Mar |
Bibliographical note
Funding Information:This work was supported by the Korean Ministry of Science and Technology through the National Research Laboratory program and the Korea–Italy program.
Keywords
- Coplanar waveguide transmission line
- Electromagnetic noise suppressor
- Integrated device
- Magnetic thin film
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics