Chalcogenide EM Absorption Layer for High-GHz Interference Control

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Solution Overview

Problem

Existing electromagnetic wave absorption devices for 5G/6G communication fail to achieve high absorption rates, particularly in the high GHz frequency range, leading to secondary interference issues.

Innovation Solution

The electromagnetic wave absorption device incorporates a substrate with an electromagnetic wave absorption layer made of chalcogenide materials, including Bi, Sb, Bi2Se3, and meta-structures such as cross or bar shapes, to enhance absorption rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional electromagnetic wave absorption materials are used for 5G/6G communication, then device functionality is maintained, but absorption rate is insufficient leading to secondary interference

Engineering Contradiction:

Improveabsorption rateVSAvoidsecondary interference

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent employs chalcogenide materials (compounds containing sulfur, selenium, or tellurium) as the electromagnetic wave absorption layer. These composite materials exhibit superior electromagnetic wave absorption capabilities compared to conventional materials, achieving over 90% absorption rate in the 5G/6G frequency range while eliminating secondary interference through their unique electronic structure and loss mechanisms

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent optimizes the thickness of the electromagnetic wave absorption layer to specifically target and absorb electromagnetic waves in the high GHz frequency range (5G/6G bands). By controlling the layer thickness and material composition parameters, the device achieves resonant absorption at desired frequencies while minimizing reflection and secondary interference

Inventive Principle:

Principle #35Parameter changes

2Reliability

If absorption rate is increased to above 90%, then secondary interference is mitigated, but material design complexity increases

Engineering Contradiction:

Improveabsorption rateVSAvoidmaterial design complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent achieves high absorption rates by optimizing key parameters including layer thickness, material composition ratios, and frequency resonance characteristics. Through systematic parameter optimization of chalcogenide materials, the device reaches over 90% absorption efficiency without requiring complex multi-layer structures or additional components

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The device significantly increases the absorption rate of electromagnetic waves, achieving more than 90% absorption, which effectively mitigates secondary interference and supports high GHz frequency communication.

Implementation Method 1

the electromagnetic wave absorption layer may contain a chalcogenide material... achieve more than 90% absorption

Methodology Applied

Scientific EffectElectromagnetic absorption: Absorption (EM radiation)

Data Source

PatentUS20250071961A1Electromagnetic wave absorption device

Publication Date: 2025.02.27 ELECTRONICS & TELECOMM RES INST

AI summary

Provided is an electromagnetic wave absorption device. The electromagnetic wave absorption device includes a substrate and an electromagnetic wave absorption layer on the substrate. The electromagnetic wave absorption layer contains a chalcogenide material. The electromagnetic wave absorption layer contains Bi, Sb, Bi2Se3, Bi2Te3, Sb2Te3, Bi1-xSbx, Bi1.1Sb0.9Te2S, or (Bi,Sb)2(Se,Te,S)3. The electromagnetic wave absorption layer is on an entire surface of an upper surface of the substrate.