2 GHz帯で動作する3.5mm角のマイクロストリップアイソレータ

概要

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A new type of microstrip-isolator was proposed. It was a regime of large |μ_+'-μ_-'|corresponding to μ_+'<0 and μ_<eff>'>0, which was realized by using a ferrite material with a small FMR line width (ΔH). The transmission characteristics of the microstrip-isolator design, with dimensions of only 3.5×3.5mm^2, were numerically simulated in the 2 GHz band, using the finite element method. A fabricated microstrip-isolator using a YIG ferrite single crystal with ΔH=2 Oe showed apparent non-reciprocal transmission characteristics with an insertion loss |S_<21>| of 0.69 dB and an isolation |S_<12>| of 13.1 dB at around 2 GHz.
社団法人日本磁気学会の論文
2006-07-01