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Inductive devices with granular magnetic materials

A technology of magnetic materials and inductance, applied in the direction of inductors, fixed inductors, printed inductors, etc., can solve the problems of low magnetization, low performance and so on

Inactive Publication Date: 2008-10-01
HERAEUS KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some amorphous magnetic alloys have higher resistivity, this comes at the expense of lower magnetization (and thus lower performance in inductive applications)

Method used

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  • Inductive devices with granular magnetic materials
  • Inductive devices with granular magnetic materials
  • Inductive devices with granular magnetic materials

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Embodiment Construction

[0024] [0022] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one of ordinary skill in the art that the present invention may be practiced without some of these specific details. In other instances, well-known structures and techniques have not been listed in detail in order to avoid unnecessarily obscuring the present invention.

[0025] 【0023】 figure 1 An inductor 100 according to one embodiment of the present invention is illustrated. The inductor 100 , which is placed on a silicon substrate 104 , comprises a conductor 101 which is in a helical configuration and terminates in a conductor lead 103 . As will be readily appreciated by one skilled in the art, the conductor 101 may be provided by any of a number of methods known to those skilled in the art, such as, for example, photolithography. In this regard, the conductors are referred to herein a...

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Abstract

An inductive device is provided, comprising a conductor configured in a spiral and a first layer of granular magnetic material having a plurality of magnetic grains embedded in an amorphous ceramic matrix. The amorphous ceramic matrix has a dielectric constant greater than 3. A transformer is also provided, comprising a core and a first inductor. The first inductor includes a first conductor configured in a spiral surrounding a first portion of the core, and a first layer of granular magnetic material. The transformer further comprises a second inductor. The second inductor includes a second conductor configured in a spiral surrounding a second portion of the core, and a second layer of granular magnetic material. The first and second layers of granular magnetic material have a plurality of magnetic grains embedded in an amorphous ceramic matrix. The amorphous ceramic matrix has a dielectric constant greater than 3.

Description

[0001] Cross References to Related Applications [0002] [0001] This application claims priority under 35 U.S.C. § 119 to US Wai Provisional Application No. 60 / 907,303, filed March 28, 2007, entitled "SOFTMAGNETIC ALLOY THIN FILMS FOR INTEGRATED INDUCTORS, TRANSFORMERS AND OTHER HIGH FREQUENCY APPLICATION (Soft Magnetic Alloy Thin Films for Integrated Inductors, Transformers, and Other High Frequency Applications), the disclosure of which is hereby incorporated by reference in its entirety for all purposes. [0003] Statement Regarding Federally Sponsored Research or Development [0004] [0002] Not applicable. technical field [0005] [0003] The present invention relates generally to inductive devices, and in particular to inductive devices having granular magnetic material. Background technique [0006] [0004] Integrated inductors are often provided on-chip and on-package with thin films of magnetic material to increase their inductance (inductance). When a high-permeabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/00H01L23/522
CPCH01F17/0006H01F1/24H01F3/14H01F27/255H01F2017/0053H01F2017/0066H01F27/00
Inventor A·达斯李辛华M·G·拉辛
Owner HERAEUS KK
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