Foldable Conductive-Frame Antenna Switching Across Device Postures
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Solution Overview
Problem
The integration of wireless communication capabilities in electronic devices with full-screen or curved screens is hindered by the need for antenna clearance space, leading to limited antenna performance and interference from metal environments, particularly in rotating or folded structures.
Innovation Solution
A first antenna is arranged in a first body with a feeding end connected to a conductive frame, allowing it to transmit signals using the frame with or without a second conductive frame, depending on the relative positions of the bodies, enhancing communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more functions are integrated into the electronic device, then the functionality and versatility are improved, but the internal space becomes crowded and antenna performance deteriorates
Solution Approach 1:
The conductive frame is segmented into multiple independent conductive components (first conductive frame, second conductive frame, third conductive frame) that can be independently controlled and configured. Each segment can be selectively connected to the antenna depending on the device posture, allowing the antenna to adapt to different spatial environments while maintaining good performance.
Solution Approach 2:
The antenna system dynamically switches between different conductive frame configurations based on the relative positions of the device bodies. When the device is folded or rotated, the system activates specific conductive frames that maintain optimal antenna performance for that posture, making the antenna adaptive rather than static.
2Ease of manufacture
If the device structure is fixed, then the manufacturing simplicity is improved, but the antenna performance across different postures deteriorates
Solution Approach 1:
The conductive frames serve multiple functions: they provide structural support for the device, act as shielding elements, and function as antenna elements depending on which ones are activated. This multi-functionality allows a single structural component to serve antenna purposes across different postures without requiring separate antenna structures for each configuration.
Solution Approach 2:
The system changes the electrical configuration parameters by selectively connecting different conductive frames to the antenna based on device posture. This parameter switching allows the same physical structure to maintain optimal antenna characteristics whether the device is flat, folded, or rotated.
3Device complexity
If a single conductive frame is used, then the device complexity is reduced, but the antenna performance in folded or rotated postures deteriorates
Solution Approach 1:
The conductive frame is segmented into multiple independent conductive components (first conductive frame, second conductive frame, third conductive frame) that can be independently controlled and configured. Each segment can be selectively connected to the antenna depending on the device posture, allowing the antenna to adapt to different spatial environments while maintaining good performance.
4Object-affected harmful factors
If the conductive frame is continuous without gaps, then the shielding effectiveness is improved, but the antenna radiation performance deteriorates
Solution Approach 1:
The conductive frame is segmented into multiple independent conductive components (first conductive frame, second conductive frame, third conductive frame) that can be independently controlled and configured. Each segment can be selectively connected to the antenna depending on the device posture, allowing the antenna to adapt to different spatial environments while maintaining good performance.
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 ensures good antenna communication performance across different device postures by utilizing conductive frames to transmit signals, improving efficiency and reducing interference, while maintaining an appealing appearance.
Implementation Method 1
In the first working mode, the first antenna transmits a signal based on the first conductive frame having the first gap. In the second working mode, the first antenna transmits the signal based on the first conductive frame and the second conductive frame.
Data Source
AI summary
An electronic device includes a first body, a second body, and a first antenna. The first body and the second body are configured to bend relatively. A periphery of the first body includes a first conductive frame, and a periphery of the second body includes a second conductive frame. The first conductive frame includes a first gap. The first antenna is arranged in the first body. A feeding end of the first antenna is connected to the first conductive frame. The first antenna includes a first working mode and a second working mode. In the first working mode, the first antenna transmits a signal based on the first conductive frame having the first gap. In the second working mode, the first antenna transmits the signal based on the first conductive frame and the second conductive frame.