A design method of a winding magnetic ring with electromagnetic interference suppression effect regulation characteristics

CN122153998APending Publication Date: 2026-06-05BEIJING UNIV OF TECH

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: BEIJING UNIV OF TECH
Filing Date: 2026-02-26
Publication Date: 2026-06-05

AI Technical Summary

Technical Problem

Existing magnetic rings have difficulty in real-time adjustment of suppression performance during electromagnetic compatibility rectification, and they also have rigid structures, bulky size, and difficulty in meeting the requirements for miniaturization and lightweighting.

Method used

A wound magnetic ring structure is designed. By co-designing the magnetic dielectric layer, dielectric layer and grounded metal shielding layer, the resonant frequency and insertion loss can be controlled. The electromagnetic response characteristics are adjusted by using a multi-layer composite wound structure.

Benefits of technology

It achieves adjustable electromagnetic interference suppression effect, supports real-time adjustment of suppression effect, is suitable for electromagnetic compatibility rectification, promotes miniaturization and lightweighting, and is suitable for space-constrained or weight-sensitive application scenarios.

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Abstract

The application relates to a design method of a winding magnetic ring with electromagnetic interference suppression effect regulation characteristics, belonging to the technical field of electromagnetic compatibility. The method realizes efficient suppression of conducted electromagnetic interference in a target frequency band by synergistically designing a winding magnetic ring structure composed of a magnetic medium layer, a dielectric medium layer and a ground shielding metal layer. The design method takes the resonant frequency and the insertion loss as the representation indexes of the electromagnetic interference suppression effect, and represents the suppression effect as the function relation of the magnetic permeability parameters of the magnetic medium layer, the dielectric constant parameters of the winding belt formed by the magnetic medium layer and the dielectric medium layer, the winding turns, the axial winding length, the winding belt thickness and the thickness adjustment coefficient of the material layer and other material electromagnetic parameters and geometric structure parameters by establishing an equivalent electromagnetic model of the winding magnetic ring structure. The application can realize real-time regulation of the suppression effect without changing the basic structure form, and has the advantages of miniaturization, light weight, high efficiency and adjustable suppression effect.

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