Wireless signal shielding instrument and laser-induced method of graphene

By laser-induced graphene structural units on a polyimide shielding plate, active absorption and shielding of electromagnetic waves of specific frequencies can be achieved, solving the interference problem of existing wireless signal jammers, improving the shielding effect and equipment health, and adapting to diverse terrains.

CN119997480BActive Publication Date: 2026-06-09CHINA TELECOM CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA TELECOM CORP LTD
Filing Date
2025-02-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing wireless signal jammers, when emitting high-power interference signals, affect the normal communication of mobile terminals that do not require jamming, and also interfere with surrounding base stations and communication equipment. Furthermore, they are costly, have low durability, and limited jamming performance.

Method used

A shielding plate made of polyimide material is formed by laser-induced graphene structural units to achieve active absorption and shielding of electromagnetic wave signals of specific frequencies, thereby avoiding the emission of high-power interference signals. The shielding plate is prepared by processing graphene with a laser.

Benefits of technology

It achieves efficient shielding of electromagnetic waves of specific frequencies, reduces the impact on terminals that do not require shielding, protects the health of communication equipment, reduces material costs, improves shielding performance and durability, and adapts to complex terrain environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a wireless signal shielding instrument and a laser induction method of graphene. The wireless signal shielding instrument comprises a shielding plate and circular structure units distributed on the shielding plate at a preset interval, wherein the material of the shielding plate is polyimide, and the circular structure units are graphene obtained by laser induction on target positions of the shielding plate. The application solves the technical problem that the normal communication of a mobile terminal without signal shielding is affected due to the fact that a related shielding instrument emits an interference signal with high power, and the wireless signal of the mobile terminal without shielding is also affected by the interference signal.
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