Rollable Display Antenna Tuning for Sliding Housing Interference
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Solution Overview
Problem
In electronic devices with rollable displays, the slidable housing can cause interference with conductive portions used as antenna radiators, leading to performance degradation.
Innovation Solution
An electronic device design that includes a communication module, processor, and conductive portions in a sliding housing structure, where the processor adjusts the electrical characteristics of a variable element in response to sliding movements to maintain or improve antenna performance by detecting changes in sliding values and applying correction values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the second housing slides relative to the first housing to enable rollable display movement, then the display area can be varied and the device becomes more versatile, but the sliding movement causes interference with the conductive portions used as antenna radiators, leading to antenna performance degradation
Solution Approach 1:
The patent applies the dynamics principle by making the electrical characteristic of the variable element adjustable in response to the sliding position of the second housing. The processor dynamically changes the electrical characteristic (capacitance or inductance) based on detected sliding values, allowing the antenna system to adapt to different sliding positions and maintain consistent performance throughout the range of motion.
Solution Approach 2:
The patent implements parameter changes by modifying the electrical characteristic of the variable element according to the sliding position. The processor identifies correction values corresponding to different sliding values and adjusts the electrical characteristic accordingly, effectively compensating for the interference caused by sliding movement and maintaining antenna radiation efficiency.
2Adaptability or versatility
If the second housing is made movable to accommodate the rollable display, then the device functionality is enhanced, but the movable housing creates harmful interference with the antenna radiators
Solution Approach 1:
The patent converts the harmful interference effect into a beneficial compensation mechanism. By detecting the sliding position and adjusting the electrical characteristic of the variable element accordingly, the system uses the interference-causing movement itself as the basis for compensation, transforming the harmful effect into an opportunity to maintain antenna performance.
Solution Approach 2:
The patent implements a feedback mechanism where the processor detects the sliding value (position of the second housing) and uses this information to determine the appropriate electrical characteristic adjustment. This closed-loop feedback system continuously monitors the sliding position and makes real-time adjustments to compensate for interference, ensuring stable antenna performance throughout the sliding range.
3Strength
If conductive portions are used in the sliding housing for structural integrity and aesthetics, then the device maintains strength and appearance, but these conductive portions interfere with antenna radiation when the housing moves
Solution Approach 1:
The patent applies the local quality principle by introducing a variable element with adjustable electrical characteristics at the specific location where interference occurs. Rather than modifying the entire housing structure, the solution locally compensates for interference by adjusting the electrical characteristic of the variable element connected to the second conductive portion, preserving both structural integrity and antenna performance.
Data Source
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.