Antenna Frame Contact Structure for Larger Clearance in Mobile Devices
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Solution Overview
Problem
In mobile devices, the increasing number of electronic components and 5G frequency bands leads to a lack of space for antennas, resulting in a small clearance area and poor performance in transmitting and receiving electromagnetic waves.
Innovation Solution
The design includes a circuit board assembly with a first conductive member, such as an elastic piece, that is fixed to a radiator, allowing for increased antenna clearance and improved performance by maintaining stable contact and freeing up space for more components, while also simplifying the structure and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more electronic components and 5G frequency bands are integrated into the mobile device, then the device functionality is improved, but the antenna clearance area is reduced and antenna performance deteriorates
Solution Approach 1:
The patent utilizes the thickness dimension (Z-axis) of the device by implementing a three-layer circuit board structure with an elevating board that raises the antenna away from the display screen. This vertical spacing creates adequate clearance area without sacrificing horizontal space, allowing both enhanced device functionality and maintained antenna performance coexist.
2Reliability
If the antenna clearance area is increased to improve antenna performance, then electromagnetic wave transmission is improved, but the device complexity increases
Solution Approach 1:
The patent combines the antenna support function with the existing circuit board structure by integrating the elevating board as part of the circuit board assembly. This merged approach provides the necessary antenna clearance while maintaining a unified, manageable structure rather than adding separate complex support mechanisms.
Solution Approach 2:
The elevating board serves multiple functions: it provides structural support for the antenna, creates the necessary clearance area from the display screen, and acts as part of the circuit board assembly. This multi-functionality reduces overall device complexity while achieving the goal of improved antenna performance.
3Strength
If a rigid connection structure is used between the circuit board and radiator, then the structural strength is improved, but the antenna clearance area is reduced
Solution Approach 1:
The patent employs an elastic connection structure between the circuit board and radiator that can dynamically adjust to maintain both structural integrity and adequate clearance. The elastic nature allows the connection to accommodate spatial requirements while maintaining sufficient mechanical strength.
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 design enhances the antenna's performance by increasing the clearance area and stability of radio frequency signal transmission, allowing for better user experience and more functions in a compact device.
Implementation Method 1
The first conductive member is in elastic contact with the radiator
Data Source
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AI summary
An electronic device, relating to the technical field of antennas. The electronic device includes a frame, a screen, and a circuit board assembly. The screen is mounted on one side of the frame. A part of the frame forms a radiator of an antenna, or the radiator of the antenna is fixed on an inner side of the frame. The circuit board assembly is located on the inner side of the frame. The circuit board assembly includes a first conductive member, and a first board, an elevating board, and a second board sequentially stacked. The first board is located on one side of the second board away from the screen. The first board includes a first main body portion and a first extension portion connected to the first main body portion. The first main body portion is fixedly connected to the elevating board. The first extension portion protrudes relative to the elevating board and the second board, and is disposed close to the radiator. The first conductive member is fixed to the first extension portion, and is in elastic contact with the radiator. The clearance area of the antenna of the electronic device is larger, and the performance of the antenna is better.