Composite Heat Dissipation Member for Antenna Module Thermal Management

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Solution Overview

Problem

In wireless communication systems operating at super-high frequency bands, effective heat dissipation is challenging due to the difficulty in integrating heat dissipation structures near antenna modules without compromising radiation performance, and existing heat dissipation members with high thermal conductivity also interfere with electromagnetic interference shielding.

Innovation Solution

A composite heat dissipation member is designed with a first heat dissipation sheet overlapping the antenna module and a second sheet with higher thermal conductivity adjacent to the first sheet, but without overlap, to enhance heat dissipation while minimizing interference with antenna radiation performance. This configuration includes a base layer and an anti-delamination layer to prevent damage and improve adhesion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a heat dissipation member with high thermal conductivity is disposed around electronic components, then heat dissipation efficiency is improved, but antenna radiation performance deteriorates due to electromagnetic interference shielding

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoidantenna radiation performance

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The heat dissipation member is divided into multiple sheets (first heat dissipation sheet and second heat dissipation sheet) with different thermal conductivities and positions. The first sheet is disposed away from the antenna module to avoid interference, while the second sheet provides additional heat dissipation capacity, thus segmenting the heat dissipation function to resolve the contradiction between heat dissipation efficiency and antenna radiation performance

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the heat dissipation member have different thermal conductivity characteristics. The first heat dissipation sheet has lower thermal conductivity and is positioned to avoid overlapping with the antenna module, while the second heat dissipation sheet has higher thermal conductivity and is positioned adjacent to the first sheet. This local differentiation allows effective heat dissipation without compromising antenna radiation performance

Inventive Principle:

Principle #3Local quality

2Temperature

If a heat dissipation structure is disposed in the vicinity of the antenna module, then heat dissipation from the antenna module is improved, but radiation performance deteriorates

Engineering Contradiction:

Improveantenna module heat dissipationVSAvoidradiation performance

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The heat dissipation structure is segmented into multiple sheets positioned at different locations. The first heat dissipation sheet is disposed adjacent to but not overlapping with the antenna module, providing heat dissipation while maintaining radiation performance. The second heat dissipation sheet is positioned to provide additional thermal management without interfering with the antenna's electromagnetic field

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first heat dissipation sheet acts as an intermediary between the antenna module and the second heat dissipation sheet. It is positioned to thermally connect with the antenna module for heat dissipation while maintaining a non-overlapping configuration that preserves radiation performance, thus mediating between thermal management requirements and electromagnetic performance

Inventive Principle:

Principle #24Intermediary (Mediator)

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 composite heat dissipation member effectively dissipates heat from both the antenna module and other electronic components, improving radiation performance by up to 3 dB and reducing thermal resistance, thus addressing the challenge of heat dissipation in high-frequency wireless communication systems.

Implementation Method 1

a second heat dissipation sheet disposed adjacent to the first heat dissipation sheet without an overlap with the first heat dissipation sheet, thermally connected to the first heat dissipation sheet, and having a higher thermal conductivity than the first heat dissipation sheet

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS11284538B2Electronic device including composite heat dissipation member and method of manufacturing the same

Publication Date: 2022.03.22 SAMSUNG ELECTRONICS CO LTD

AI summary

A composite heat dissipation member and an electronic device comprising the composite heat dissipation member. The composite head dissipation member may include a first heat dissipation sheet disposed to be overlapped with an antenna module, and a second heat dissipation sheet disposed adjacent to the first heat dissipation sheet without an overlap with the first heat dissipation sheet, thermally connected to the first heat dissipation sheet, and having a higher thermal conductivity than the first heat dissipation sheet.