Antenna Sub Radiator for Metal Bezel Interference
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Solution Overview
Problem
Electronic devices with metal components face challenges in maintaining antenna radiation performance due to the interference caused by metal parts, leading to reduced rigidity and aesthetic issues.
Innovation Solution
Incorporating a sub antenna radiator electrically connected to the main antenna radiator around metal parts, such as a metal bezel, to prevent radiation efficiency deterioration, while maintaining the device's appearance and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal parts (metal bezel, metal housing) are used to increase rigidity and aesthetic appeal, then device rigidity and appearance are improved, but antenna radiation performance deteriorates due to interference from metal materials
Solution Approach 1:
A non-metallic support structure acts as an intermediary between the metal bezel and the antenna radiator, electrically isolating the antenna from the metal parts while maintaining mechanical support. This mediator prevents the harmful electromagnetic interference from the metal components without compromising the device's rigidity or aesthetic appearance.
Solution Approach 2:
The antenna radiator is extracted from direct contact with the metal parts by positioning it on a non-metallic support structure. This separation removes the source of interference (metal-antenna interaction) while preserving the beneficial properties of both the metal bezel (rigidity, appearance) and the antenna (radiation performance).
2Reliability
If antenna radiator volume is increased to provide sufficient RF bandwidth and enhanced radiation performance, then radiation performance is improved, but device volume and mounting space requirements increase
Solution Approach 1:
The antenna radiator is positioned in the vertical dimension (Z-axis) by mounting it on a support structure that extends from the metal bezel. This three-dimensional arrangement allows the antenna to achieve sufficient radiation performance and RF bandwidth without increasing the horizontal footprint of the device, effectively utilizing vertical space instead of lateral space.
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 configuration enhances radiation performance by up to 6 decibels, improves the device's rigidity, and maintains high efficiency within the same mounting space, addressing the interference issues caused by metal components.
Implementation Method 1
an antenna radiator arranged around a plurality of metal parts of an electronic device, and at least one sub antenna radiator arranged around the antenna radiator to electrically couple with the antenna radiator, to prevent deterioration of radiation efficiency
Data Source
AI summary
An antenna apparatus and an electronic device are provided. The electronic device includes a plurality of metal parts, an antenna radiator arranged around the plurality of metal parts, and at least one sub antenna radiator arranged to electrically connect with the antenna radiator around the antenna radiator, and prevent deterioration of radiation efficiency of the antenna radiator caused by the plurality of metal parts.