Rollable Display Antenna Tuning for Sliding Housing Interference
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Solution Overview
Problem
Slidable electronic devices with rollable displays experience interference between conductive portions of the housing used as antenna radiators due to movable housings, leading to performance degradation.
Innovation Solution
An electronic device with a communication module, processor, and a sliding housing structure that includes conductive portions, featuring a variable element connected to the conductive portions, allowing the processor to adjust resonance characteristics by altering the electrical properties of the variable element in response to housing movement, thereby maintaining antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive portions of the housing are used as antenna radiators, then antenna functionality is achieved, but interference occurs due to movable housing causing performance degradation
Solution Approach 1:
The patent applies dynamics by making the electrical characteristic of the variable element adjustable in response to housing movement. The processor detects the sliding state and dynamically changes the electrical characteristic (capacitance or inductance) of the variable element connected to the second conductive portion, allowing the antenna system to adapt to different housing positions and maintain performance despite the movable structure causing interference.
Solution Approach 2:
The patent implements parameter changes by modifying the electrical characteristic (capacitance or inductance) of the variable element based on the sliding state of the second housing. This parameter adjustment compensates for the interference caused by the movable housing, enabling the antenna to maintain reliable performance across different operational states without changing the physical structure.
2Reliability
If a variable element is added to adjust resonance characteristics, then antenna performance is maintained, but device complexity increases
Solution Approach 1:
The patent uses parameter changes by adjusting the electrical characteristic (capacitance or inductance) of the variable element to compensate for interference. This approach maintains antenna performance without requiring complex structural modifications, as the variable element can be integrated into the existing conductive portion design and controlled through software-based detection of sliding state.
Solution Approach 2:
The patent replaces potential mechanical adjustment mechanisms with an electrical control system. Instead of mechanically adjusting the antenna structure to compensate for housing movement, the system uses a variable element whose electrical characteristic can be changed via control signals from the processor, simplifying the overall system while maintaining 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
Reduces performance degradation of antennas in slidable electronic devices by adjusting resonance characteristics to compensate for interference caused by movable housings.
Implementation Method 1
a variable element disposed in the second housing and electrically connected to the second conductive portion. The processor is configured to adjust a resonance characteristic of the second conductive portion by adjusting an electrical characteristic of the variable element in response to sliding of the second housing
Data Source
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AI summary
Certain embodiments of the disclosure relate to a device and a method for increasing the efficiency of an antenna of an electronic device that includes a rollable display. The electronic device may include: a processor; a first housing, in which the processor is disposed, including a first conductive portion; a second housing configured to slide in a first direction from the first housing and including a second conductive portion; a rollable display, at least a portion of which is exposed in a slide-out manner according to movement of the second housing; and a variable element disposed in the second housing and is electrically connected to the second conductive portion. The processor may adjust an electrical characteristic of the variable element in response to sliding of the second housing. The disclosure may further include various other embodiments.