Wideband Measurement System of ΔH_ω using All Shielded Shorted Microstrip Line
スポンサーリンク
概要
- 論文の詳細を見る
The wideband measurement system of ΔHω, FMR (ferromagnetic resonance) line width of microwave ferrite, is proposed. In this system, an all shielded shorted microstrip line is used as a test fixture and a specimen is inserted close to the short end. The absorption curve of FMR is observed by monitoring S11 of fixture and sweeping frequency in VNA (vector network analyzer) under constant external magnetic field. From these data, the frequency width Δω, at which an imaginary part μ” of complex permeability becomes half of maximum at resonance, is derived based on lumped element circuit model and ΔH is calculated by ΔH[Oe]=Δω[MHz]/2.8. As this ΔH is different from conventional ΔH, this is designated ΔHω. The wideband measurement result of ΔHω for 5mm square garnet slab over from 0.7[GHz] to 11[GHz] using just one test fixture is reported.
- 2009-05-01
論文 | ランダム
- 脱窒担体を用いた硝化脱窒プロセスの検討 (第37回下水道研究会発表会講演集) -- (口頭発表セッション7 水処理・再利用)
- 高度処理に対応したOD法の設計の考え方について (第37回下水道研究会発表会講演集) -- (口頭発表セッション7 水処理・再利用)
- 膜分離活性汚泥法--技術の概要と実用化実験の現状 (特集 最新の下水道技術)
- 多重円板外胴型スクリュープレス脱水機--反応タンクからの余剰汚泥直接脱水 (特集 最新の下水道技術)
- 汚泥の減量化技術と汚泥濃縮・脱水プロセスの重要性 (シリーズ企画・下水汚泥減容化技術の最新動向)