A multilayer shielded low-loss transmission line structure

By designing a multi-layer shielding structure, the problems of signal susceptibility to interference and structural instability in transmission lines in complex electromagnetic environments are solved, achieving stable signal transmission and structural stability, and improving anti-interference capability and service life.

CN224554064UActive Publication Date: 2026-07-24JIANGSU SHENGQI ELECTRONICS CO LTD
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Patent Information

Application Number
CN202521827950.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-27
Publication Date
2026-07-24
Estimated Expiration
2035-08-27

AI Technical Summary

Technical Problem

Existing transmission lines use a single-layer shielding design, which is difficult to effectively block external electromagnetic interference and its own signal radiation. In complex electromagnetic environments, the signal is easily interfered with and distorted, the structure is unstable, and the shielding layer is not tightly bonded to other layers, making it prone to delamination when bent or vibrated.

Method used

It adopts a multi-layer shielding structure, including a conductor core, an insulating layer, an inner shielding layer, a buffer layer, an outer shielding layer, and a protective layer, which are concentrically arranged from the inside to the outside. The inner and outer shielding layers are designed to deal with electromagnetic interference in different frequency bands, and the buffer layer absorbs the impact of vibration and bending, ensuring that each layer is tightly bonded.

Benefits of technology

It achieves stable and complete signal transmission in complex electromagnetic environments, reduces resistance and dielectric loss, extends service life, and improves anti-interference capability and structural stability.

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Abstract

The utility model discloses a kind of multilayer shielding low-loss transmission line structure, belong to transmission line technical field, its technical scheme main points include transmission line main body, the transmission line main body includes conductor core, the outside of the conductor core is wrapped with insulating layer, the outside of the insulating layer is wrapped with inner shielding layer, the outside of the inner shielding layer is wrapped with buffer layer, double barrier is formed by inner shielding layer and outer shielding layer, respectively for different frequency band electromagnetic interference, both can block external electromagnetic signal invasion, and can prevent internal signal from radiating outward, solve the problem that traditional single layer shielding anti-interference ability is weak, ensure the stability of signal transmission under complex electromagnetic environment, and the material selection of conductor core and insulating layer considers conductivity and insulating property, reduce resistance loss and dielectric loss in signal transmission process, ensure that high-frequency signal maintains good integrity in long distance transmission, avoid distortion or attenuation.
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