Mobile Terminal Antenna Placement in Metal Frame Depression
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Solution Overview
Problem
Existing mobile terminals with metal exteriors face challenges in performing short-range communication effectively due to electromagnetic interference from metal components, and there is a need for a slim and durable design that maintains functionality.
Innovation Solution
A mobile terminal design featuring a frame with a depressed portion for housing a short-range antenna between the frame and display panel, allowing the antenna to radiate towards the display while minimizing interference from metal components, and using a metal or synthetic resin construction for durability and slimness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal exterior is used for durability and aesthetic appeal, then strength and appearance are improved, but electromagnetic interference with short-range communication deteriorates
Solution Approach 1:
The terminal body is divided into a metal frame and a non-metallic display panel region. The short-range antenna is positioned in the depressed portion of the frame, creating a segmented structure where the metal frame provides structural strength while the depressed portion and antenna positioning create separation between the metal and the antenna, reducing electromagnetic interference.
Solution Approach 2:
The depressed portion in the metal frame acts as an intermediary structure that houses the short-range antenna. This depressed portion creates a physical separation and electromagnetic isolation between the metal frame and the antenna, allowing the metal exterior to maintain its strength while the antenna can function without significant electromagnetic interference.
2Reliability
If components are arranged to reduce electromagnetic interference, then communication performance is improved, but terminal thickness increases
Solution Approach 1:
Instead of separating the antenna from the metal frame in the thickness direction (which would increase terminal thickness), the invention uses the surface dimension by creating a depressed portion in the frame. This allows the antenna to be positioned within the plane of the frame structure, achieving electromagnetic isolation without increasing the overall terminal thickness.
Solution Approach 2:
The short-range antenna is nested within the depressed portion of the metal frame, similar to a doll within a doll. This nested arrangement allows the antenna to be housed within the existing frame structure without adding external thickness, while still achieving the necessary separation from other metal components to reduce electromagnetic interference.
3Reliability
If a depressed portion is created in the frame for antenna housing, then short-range communication is improved, but manufacturing complexity increases
Solution Approach 1:
The depressed portion in the frame can be manufactured by changing local parameters such as depth, width, and shape of the depression. These parameter changes can be achieved through standard manufacturing processes like injection molding, stamping, or CNC machining, allowing the depressed portion to be integrated into the frame manufacturing without requiring entirely new manufacturing methods.
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 solution enables efficient short-range communication by reducing electromagnetic interference and achieving a slim, durable mobile terminal that maintains performance and aesthetic appeal.
Implementation Method 1
a short range antenna disposed in the depressed portion and between the frame and the display panel and having a radiation direction toward the display panel
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A mobile terminal including a frame having a depressed portion; a display panel positioned on a first side of the frame facing the display panel; and a short range antenna disposed in the depressed portion and between the frame and the display panel and having a radiation direction toward the display panel.