Rollable Screen Antenna Assembly With Internal Extension Stubs
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Solution Overview
Problem
Existing mobile phones face a challenge in arranging sufficient antennas due to the reduction of metal frames that can be used as antennas, leading to insufficient length for antenna arrangement.
Innovation Solution
The proposed solution involves an antenna assembly with extension stubs that increase the length of the antennas, ensuring sufficient length even when side frames are non-metallic. This is achieved by integrating extension stubs into the electronic device, allowing the antennas to radiate efficiently and cover various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If side frames are made non-metallic (glass frames), then aesthetic appearance and structural integrity are improved, but the total length of metal frames available for antenna arrangement is reduced
Solution Approach 1:
The patent extends the antenna arrangement from the two-dimensional frame perimeter into the three-dimensional interior space of the electronic device. Extension stubs are disposed inside the device body, allowing the antenna path to utilize both the frame structure and the internal volume, thereby compensating for the reduced frame length when non-metallic side frames are used.
Solution Approach 2:
The extension stubs are nested within the interior space of the electronic device, utilizing the available internal volume to extend the antenna path. This nested arrangement allows the antenna to be embedded within the device structure without adding external dimensions, effectively using the device's internal space to make up for the reduced frame length.
2Length of stationary object
If gaps are increased at top and bottom parts of metal frame to form antennas, then antenna length is improved, but the structural integrity and aesthetic appearance of the frame are worsened
Solution Approach 1:
The patent extracts the antenna-forming function from the frame structure itself and relocates it to separate extension stubs disposed within the device interior. This separation allows the frame to maintain its continuous, aesthetically pleasing appearance while the extension stubs provide the necessary antenna length through controlled gaps and grounding structures inside the device.
Solution Approach 2:
The extension stubs act as intermediary elements that bridge the gap between the frame structure and the ground plane. These stubs include controlled gaps and grounding structures that electrically connect the antenna path to the ground, enabling antenna functionality without requiring large visible gaps in the frame itself.
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 effectively addresses the issue of insufficient antenna length, ensuring high radiation efficiency and the ability to cover multiple frequency bands, thereby enhancing the communication capabilities of mobile devices.
Implementation Method 1
the first radiator can radiate an electromagnetic wave to the outside, so that radiation efficiency of the first antenna is ensured
Data Source
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AI summary
Embodiments of this application provide an antenna assembly and an electronic device with a rollable display. The electronic device includes a mobile or fixed terminal with an antenna, for example, a mobile phone or a tablet computer. In the electronic device provided in embodiments of this application, an antenna radiator located on a top metal frame or a bottom metal frame of the electronic device and an extension stub extending into the electronic device and connected to the antenna radiator increase a length of an antenna. This ensures antenna radiation efficiency, and resolves a problem in an existing mobile phone that a length for arranging antennas in the mobile phone is insufficient because a metal frame that can be used as an antenna is shortened.