Dual Antenna Tuning for Foldable Display Extension States
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Solution Overview
Problem
Foldable and rollable electronic devices face challenges in maintaining consistent wireless communication performance due to changes in display size and conductivity affecting antenna performance.
Innovation Solution
Incorporating a flexible display and dual antennas in the housing, with a sensor module to detect movement, and a processor to adjust tuner codes based on display extension distance, ensuring optimal communication performance across different states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display size is changed in foldable or rollable electronic devices, then the adaptability and versatility of the device is improved, but the wireless communication performance deteriorates due to changes in display conductivity and antenna operation
Solution Approach 1:
The patent applies dynamics by making the antenna system adjustable rather than fixed. The aperture tuner dynamically changes the effective aperture of the antenna based on the display's folded or unfolded state, and the impedance tuner adjusts impedance parameters in real-time. This dynamic adaptation allows the antenna to maintain optimal performance across different display configurations, resolving the contradiction between display adaptability and communication reliability.
Solution Approach 2:
The patent changes physical parameters of the antenna system to compensate for display-induced performance degradation. Specifically, it modifies the aperture parameter through the aperture tuner and impedance parameters through the impedance tuner. By adjusting these parameters based on display state detection, the system maintains consistent wireless communication performance despite display size changes, thus resolving the technical contradiction.
2Device complexity
If a single antenna is used in the electronic device, then the device complexity is reduced, but the adaptability to different communication bands and display states is insufficient
Solution Approach 1:
The patent makes a single antenna system multi-functional by equipping it with both aperture tuning and impedance tuning capabilities. This allows the same antenna to adapt to different communication bands and display states without requiring separate antennas for each function. The universal tuning mechanism enables one antenna to perform multiple roles, reducing overall device complexity while maintaining high adaptability.
Solution Approach 2:
The patent introduces dynamic tuning mechanisms that allow the single antenna to adapt its characteristics in real-time. The aperture tuner and impedance tuner work together to dynamically reconfigure the antenna's electrical properties, enabling it to serve multiple communication bands and accommodate different display configurations. This dynamic capability replaces what would traditionally require multiple fixed antennas.
3Reliability
If the aperture tuner and impedance tuner are both applied to each antenna, then the wireless communication performance is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent merges the aperture tuning and impedance tuning functions into a coordinated system that operates together on each antenna. Rather than treating them as separate, independent systems, the patent integrates their control mechanisms so they work in conjunction to achieve optimal performance. This merging approach reduces overall system complexity compared to having fully independent tuning systems, while maintaining high communication performance.
Solution Approach 2:
The patent implements self-service through automated detection and adjustment mechanisms. The system automatically detects the display state (folded or unfolded) and communication band requirements, then autonomously adjusts the aperture and impedance parameters without requiring manual intervention. This self-service capability reduces the need for complex user interfaces and control systems, thereby lowering operational complexity while maintaining optimal performance.
Data Source
AI summary
An electronic device according to an embodiment disclosed in the present disclosure may include a housing including a first housing part and a second housing part, a flexible display, an actuator configured to move the second housing part relative to the first housing part, a first antenna that performs wireless communication using a first part of a side frame of the first housing part, a second antenna that performs wireless communication using a second part of the side frame of the first housing part, a sensor module that detects movement of the first housing part or the second housing part, a communication circuit that transmits/receives a wireless signal through the first antenna or the second antenna, and a processor that changes a tune code of a tuner included in each of the first antenna and the second antenna based on an extension distance of the display. Another embodiment recognized from the description can be implemented.