Earpiece Metal Mesh Diversity Antenna for Mobile Terminals

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Solution Overview

Problem

Metal accessories, such as earphone meshes, on terminals like mobile phones and tablets, absorb radiation power and reduce antenna radiation efficiency, particularly affecting diversity antennas.

Innovation Solution

The design of a diversity antenna device with an elliptical ring configuration for the earpiece metal mesh, integrated with resonant portions and branches, forming high, medium, and low frequency branches, which resonate at specific wavelengths, minimizing the impact of the earpiece metal mesh on antenna performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If metal accessories (earpiece metal mesh) are arranged on terminals, then aesthetic appearance and structural integrity are improved, but antenna radiation efficiency deteriorates due to absorption of radiation power

Engineering Contradiction:

Improveaesthetic appearanceVSAvoidantenna radiation efficiency

Core Design Contradiction:

ShapeVSLoss of energy

Solution Approach 1:

The patent integrates the earpiece metal mesh (originally a harmful element absorbing radiation) into the antenna structure itself. By designing the metal mesh as part of the antenna's radiating elements (first branch, second branch, third branch, and public branch forming diversity antenna), the harmful radiation-absorbing component is transformed into a beneficial radiating element, converting the harm into benefit while maintaining aesthetic appearance.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Device complexity

If earpiece metal mesh is placed closer to the antenna for structural integration, then device complexity is reduced, but antenna radiation performance deteriorates in the alignment area

Engineering Contradiction:

Improvestructural integrationVSAvoidantenna radiation performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent merges the earpiece metal mesh with the antenna structure by making the metal mesh constitute part of the antenna's radiating elements. The first branch, second branch, third branch, and public branch are formed using the metal mesh material, creating a unified structure that serves both as earpiece and antenna, reducing device complexity while maintaining radiation performance through proper electromagnetic design.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The antenna is segmented into multiple independent branches (first branch, second branch, third branch, and public branch) that can be independently optimized for different frequency bands. This segmentation allows each branch to be tuned for specific frequency ranges, maintaining radiation performance across different bands despite the integrated structure.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If diversity antenna structure is implemented for frequency coverage, then adaptability is improved, but device complexity increases due to multiple branches and resonant portions

Engineering Contradiction:

Improvefrequency coverageVSAvoidantenna structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent designs a universal antenna structure where the first branch, second branch, third branch, and public branch can collectively serve multiple frequency bands (high frequency, medium frequency, low frequency). The same physical structure performs multiple functions across different frequency ranges, achieving adaptability without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The antenna structure utilizes dynamic resonance characteristics where different branches resonate at different frequencies. The resonant portions are designed with specific geometries that allow them to dynamically respond to different frequency inputs, enabling broad frequency coverage through resonant tuning rather than static design.

Inventive Principle:

Principle #15Dynamics

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

This integrated design significantly reduces the impact of the earpiece metal mesh on antenna radiation performance while controlling frequency coverage, thereby enhancing antenna efficiency and reducing development costs.

Implementation Method 1

a diversity antenna device with an elliptical ring configuration for the earpiece metal mesh, integrated with resonant portions and branches, forming high, medium, and low frequency branches, which resonate at specific wavelengths

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS11374312B2Antenna device and terminal

Publication Date: 2022.06.28 JRD COMM (SHENZHEN) LTD

AI summary

The present disclosure discloses an antenna device and a terminal. The antenna device includes a first branch, a second branch, a third branch, a public branch, and a feed point. The first branch, the second branch, the third branch, a public branch and the feed point constitute a diversity antenna cooperatively. The first branch is configured as an earpiece metal mesh. The feed point is electrically connected to the first branch. The second branch and the third branch are electrically connected to an end of the public branch, respectively. An another end of the public branch is electrically connected to the feed point.