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Electromagnetic Shielding Materials

Electromagnetic Shielding Materials

Due to increased electronic wave sources inside and outside vehicles,
6GHz EM wave resistance is required.

Electric vehicle manufacturers are in the process of step-by-step development to adapt to the 3.5GHz frequency
used in ADAS and the 6GHz frequency used in V2X, 5G communication, and autonomous driving.

As vehicle electrification and autonomous driving levels rise, high-frequency EM shielding
technology becomes essential.

External factors : V2X*

EM waves generated during V2X
such as V2I, V2V, V2P, etc.

Internal factor :
Electronic control units

EM waves generated within vehicle electronic components and ECU
* V2X (Vehicle to X)
- V2I(Vehicle to Infrastructure), V2V(Vehicle to Vehicle), V2P(Vehicle to Pedestrian)

EM wave-related automobile specs are expanding with stricter standards

Revision of ISO 11452-9 (Revised in June 2021) 142MHz ~ 6GHz

Automobiles: Revision of component evaluation methods and frequency range for electromagnetic disturbance
originating from narrowband radiated electromagnetic energy

Automotive Electromagnetic Shielding Standards

Automotive Electromagnetic Shielding Standards
Item Electromagnetic shielding efficiency
ECU(Electronic Control Unit) 40 ~ 60dB
ADAS
(Advanced Driver Assistance Systems)		 40 ~ 60dB
Infotainment 40 ~ 60dB
Inverter/Converter 40 ~ 60dB
Automotive computer 40 ~ 60dB

Effects According to Electromagnetic Shielding Efficiency

Effects According to Electromagnetic Shielding Efficiency
Shielding efficiency (dB) Shielding effect (%)
10 90
20 99
30 99.9
40 99.99
50 99.999
60 99.9999

Criteria for Electromagnetic Shielding Mechanism
and Major Components

Electromagnetic Shielding Mechanism

Shielding Efficiency* [dB]
= Reflection + Absorption + Multiple Reflections **

* An indicator representing electromagnetic shielding performance.** A very low value that can be ignored when absorption is greater than 15.

Possessing a Total Solution
for High-Frequency Electromagnetic Shielding

좌우스크롤 이미지Touch the screen, and move to left and right.

High-Frequency Electromagnetic Shielding
Internal Metal/Magnetic metal materials
External Silver
Form Metal powder mixed liquid coating material
Applicable industries Electronics and electronic components, Electric vehicles, Autonomous driving systems
High-Frequency Electromagnetic Shielding
Characteristics Securing a high-yield functional powder manufacturing process using the existing liquid-powder process.Spray coating material that allows for high efficiency and weight reduction effects at thin thicknesses.Electromagnetic shielding in the high-frequency band up to ~10 GHz.

Electromagnetic Shielding Performance Evaluation Results
of Vmaker's Product

Excellent electromagnetic shielding efficiency of
over 60dB from the low-frequency band of 30MHz to the
high-frequency 6GHz required by ISO regulations


 
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