Metal Bezel Antenna Module for Side Beam Coverage

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Solution Overview

Problem

Metal bezels in electronic devices can obstruct antenna radiation paths, making it difficult to secure beam coverage on side surfaces and adversely affecting the device's appearance when divided into portions.

Innovation Solution

An antenna module is formed on a metal bezel with very thin slits, allowing for multiple frequency bands and integrating the antenna module with the bezel itself, which can also function as a key input device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separate antenna module is installed in the electronic device, then antenna functionality is achieved, but the number of components increases and assembly complexity increases

Engineering Contradiction:

Improveantenna functionalityVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the antenna module with the metal bezel by forming an integrated structure where the antenna module is coupled to the inner surface of the metal bezel. The bonding adhesive is applied directly to the metal bezel's inner surface, creating a unified assembly that reduces component count and simplifies the assembly process while maintaining reliable antenna functionality.

Inventive Principle:

Principle #5Merging (Combining)

2Stability of the object's composition

If bonding adhesive is applied to the antenna module, then the antenna module can be fixed to the metal bezel, but the adhesive may overfill and affect appearance or cause contamination

Engineering Contradiction:

Improvefixing stabilityVSAvoidadhesive overfilling and contamination

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a bonding adhesive with specifically controlled viscosity (100-500 cps) as an intermediary between the antenna module and metal bezel. This controlled viscosity acts as a mediator that provides sufficient bonding strength while preventing excessive flow and overfilling, thereby eliminating the harmful effect of adhesive contamination without compromising fixing stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If conventional materials and structures are used, then manufacturing is simple, but antenna performance and aesthetic appearance cannot be simultaneously optimized

Engineering Contradiction:

Improveantenna performanceVSAvoidmanufacturing simplicity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent optimizes the bonding adhesive's viscosity parameter to a specific range (100-500 cps) to simultaneously achieve proper filling of the gap between components and prevention of overfilling. This parameter change enables the use of conventional manufacturing processes while achieving both good antenna performance and aesthetic appearance without requiring complex manufacturing techniques.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3874729B1Antenna module using metal bezel and electronic device including thereof

Publication Date: 2026.04.29 SAMSUNG ELECTRONICS CO LTD

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Figure 2B

AI summary

Disclosed is an electronic device including a metal bezel including a bezel patch separated through a bezel slit, a printed circuit board including a first conductive pattern and a second conductive pattern, which are separated through a substrate slit and a communication module transmitting or receiving an antenna signal, using an antenna element including the bezel patch, the first conductive pattern, and the second conductive pattern. The first conductive pattern is connected to a part of the metal bezel. The bezel patch and the second conductive pattern is arranged to be aligned vertically. A bezel cavity is formed between the bezel patch and the second conductive pattern.