发明名称 |
Non-reciprocal circuit device having small absolute value of temperature coefficient of out-of-band attenuation and small absolute value of temperature coefficient of maximum- isolation frequency |
摘要 |
A non-reciprocal circuit device includes a magnetic disk; a plurality of central conductors intersecting each other on a surface of the magnetic disk; a plurality of matching capacitors connected to the respective central conductors; and an SmCO-based or AlNiCo-based magnet that is stacked on the magnetic disk, the SmCO-based or AlNiCo-based magnet applying a bias magnetic field to the magnetic disk. The magnetic disk is composed of garnet ferrite represented by any one of the following Formulae (1) to (3): <?in-line-formulae description="In-line Formulae" end="lead"?>Y<SUB>3-x</SUB>Gd<SUB>x</SUB>Fe<SUB>t-2y-z</SUB>Co<SUB>y</SUB>Si<SUB>y</SUB>Al<SUB>z</SUB>O<SUB>12</SUB> (1) <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>Y<SUB>3-x-u</SUB>Gd<SUB>x</SUB>Ca<SUB>u</SUB>Fe<SUB>t-2y-u-z</SUB>Co<SUB>y</SUB>Si<SUB>y</SUB>D<SUB>u</SUB>Al<SUB>z</SUB>O<SUB>12</SUB> (2) <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>Y<SUB>3-x</SUB>Gd<SUB>x</SUB>Fe<SUB>t-2y-v-z</SUB>Co<SUB>y</SUB>Si<SUB>y</SUB>In<SUB>v</SUB>Al<SUB>z</SUB>O<SUB>12</SUB> (3) <?in-line-formulae description="In-line Formulae" end="tail"?>
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申请公布号 |
US2005128023(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20040004521 |
申请日期 |
2004.12.03 |
申请人 |
ALPS ELECTRIC CO., LTD. |
发明人 |
TAKAHASHI TOSHIO;ONISHI HITOSHI |
分类号 |
C04B35/40;H01P1/36;H01P1/383;H01P1/387;(IPC1-7):H01P1/36 |
主分类号 |
C04B35/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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