학술논문
Integration of crossed anisotropy magnetic core into toroidal thin-film inductors
Document Type
Author Abstract
Author
Source
IEEE Transactions on Microwave Theory and Techniques. June 2005, Vol. 53 Issue 6, p2096, 5 p.
Subject
Language
English
ISSN
0018-9480
Abstract
A new approach to RF thin-film inductors with an integrated magnetic core has been investigated. A toroidal inductor design was realized in thin-film technology aiming at small-signal applications in the frequency range from 10 MHz to 1 GHz. The magnetic core consists of a multilayer of sputter deposited soft magnetic FeCoBSi. The individual magnetic films were deposited in a way to realize a crossed magnetic anisotropy in the core. High-frequency measurements of the multilayers already illustrated the advantages of the unique magnetic geometry. The influence and benefit of such a magnetic core on the toroid microinductor is discussed. The results show that such crossed anisotropy microinductors are a very promising alternative to common planar spiral inductors in the RF range. Index Terms--Anisotropy, inductor, magnetic devices, magnetic cores, permeability.