Ferromagnetic MEMS arrays for reconfigurable frequency-selective surfaces

被引：0

作者：

Zendejas, J ^{[1
]}

Gianvittorio, J ^{[1
]}

Yoo, B ^{[1
]}

Rahmat-Samii, Y ^{[1
]}

Nobe, K ^{[1
]}

Judy, JW ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

来源：

MAGNETIC MATERIALS, PROCESSES, AND DEVICES VII AND ELECTRODEPOSITION OF ALLOYS, PROCEEDINGS | 2003年 / 2002卷 / 27期

关键词：

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Reconfigurable frequency-selective surfaces (FSS) composed of ferromagnetic arrays have been fabricated by incorporating MEMS techniques and electrodeposition of highly magnetic materials. These arrays of magnetic microactuators have been demonstrated to dynamically attenuate the frequency bands they were designed for. A single dipole element consists of an 850x158x30 mum(3) ferromagnetic plate made of 40Co-60Ni attached to a pair of 400x5x1 mum(3) double-ended polysilicon torsion bars. The remanent magnetization in the hard ferromagnetic material allows relatively small magnetic fields (similar to1750 A/m or 22 Oe) to induce significant angular deflections (similar to45degrees). By rotating the dipole elements from 0degrees to more than 45degrees, the filtering response of the frequency-selective surface can be tuned over a range of 5 GHz at frequencies over 60 GHz.

引用

页码：171 / 187

页数：17

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