| Presentation | 1998/11/19 Microwave and Milliwave Absorber Using Ferrite Material Hiroyasu Ota, Masafumi Kimura, Katumi Okayama, Shin-ichi Kondo, Motofumi Homma, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The microwave absorption properties of M-type hexagonal ferrite BaFe_<12-x> (Ti_0.5Mn_0.5)_xO_19 and its composite have been investigated. It was found that the complex permeability μ^'_r and μ^"_r induced by the ferrimagnetic resonance can be controlled both in frequency axis and in amplitude by changing the substitution amount x and the powder mixture ratio. The complex permeability of TiMn substituted ferrite composite was successfully adjusted to the calculated conditions for impedance matched adsorbers, and exhibited a wide absorption bandwidth Δf/f=47 % in the X-band. It is possible to design absorbers for an arbitrary frequency from a few GHz to 100 GHz using the same procedure. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | microwave absorber / hexagonal ferrite / ferrimagnetic resonance / permeability / impedance matching / ferrite composite |
| Paper # | MW98-121 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 1998/11/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Microwave and Milliwave Absorber Using Ferrite Material |
| Sub Title (in English) | |
| Keyword(1) | microwave absorber |
| Keyword(2) | hexagonal ferrite |
| Keyword(3) | ferrimagnetic resonance |
| Keyword(4) | permeability |
| Keyword(5) | impedance matching |
| Keyword(6) | ferrite composite |
| 1st Author's Name | Hiroyasu Ota |
| 1st Author's Affiliation | Electromagnetic Compatibility Research Laboratories() |
| 2nd Author's Name | Masafumi Kimura |
| 2nd Author's Affiliation | Electromagnetic Compatibility Research Laboratories |
| 3rd Author's Name | Katumi Okayama |
| 3rd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| 4th Author's Name | Shin-ichi Kondo |
| 4th Author's Affiliation | Graduate School of Engineering, Tohoku University |
| 5th Author's Name | Motofumi Homma |
| 5th Author's Affiliation | Graduate School of Engineering, Tohoku University |
| Date | 1998/11/19 |
| Paper # | MW98-121 |
| Volume (vol) | vol.98 |
| Number (no) | 419 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |