High-frequency current suppression body using magnetic loss material exhibiting outstanding complex permeability characteristics
First Claim
1. A high-frequency current suppression body having a sheet shape and comprising an adhesive layer or pressure-sensitive adhesive layer on at least one surface of a magnetic thin film.
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Abstract
In order to provide a magnetic loss material exhibiting outstanding high-frequency magnetic loss characteristics extremely effective in eliminating high-frequency transmission noise from very densely integrated electronic microcircuits such as semiconductor integrated circumference devices, together with a manufacturing method therefor and a high-frequency current suppression body wherein such is used, the present invention is a high-frequency current suppression body having a sheet shape comprising an adhesive layer or a pressure-sensitive adhesive layer (23) on at least one surface of a magnetic thin film (19). This magnetic thin film is a magnetic loss material consisting of M—X—Y, where M is at least one of Fe, Co, and Ni, X is at least one element other than M or Y, and Y is at least one of F, N, and O. The maximum value μ″max of the loss factor μ″ of the magnetic loss material exists in a frequency range of 100 MHz to 10 GHz. A relative bandwidth bwr is not greater than 200% where the relative bandwidth bwr is obtained by extracting a frequency bandwidth between two frequencies at which the value of μ″ is 50% of the maximum μ″max and normalizing the frequency bandwidth at the center frequency thereof.
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Citations
20 Claims
- 1. A high-frequency current suppression body having a sheet shape and comprising an adhesive layer or pressure-sensitive adhesive layer on at least one surface of a magnetic thin film.
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20. A high-frequency current suppression body formation method wherein a magnetic thin film formed on one surface of a peelable sheet-form substrate is placed on an object, and, by applying a pressure from said substrate side thereof, the portion of said magnetic thin film where the pressure is applied is transferred to said object.
Specification