Filter circuit having an Fe-based core
AssigneeMetglas, Inc.
InventorsRyusuke Hasegawa, Ronald J. Martis, Seshu V. Tatikola
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Abstract
A filter circuit is used to select frequency bands of digital and analog signals over communications channels in a DSL communications system. The filter circuit includes an inductor having a core that consists essentially of an Fe-base amorphous metal alloy. Advantageously, the filter circuit provides as good or better performance than a filter circuit using a Co-base core; but is much less expensive. As such, it provides a low cost, high efficiency solution to communications applications, such as DSL communications systems, and the like.
Claims11
A bandpass filter, comprising an inductor having a core that consists essentially of an Fe-base amorphous metal alloy.
An inductor comprising a core that consists essentially of an Fe-base amorphous metal alloy, and has a substantially constant permeability over a frequency range of approximately 1 to 1000 KHz.
In a method for limiting frequency communications, the improvement wherein there is utilized an inductor having a core consisting essentially of an Fe-base amorphous metal alloy.
Dependencies are inferred from the claim text.