Pen-Attached Antenna Layout With Nonconductive Overlap Shielding
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Solution Overview
Problem
The attachment of a pen input device to an electronic device, such as a smartphone, can deteriorate the antenna radiation performance due to its electromagnetic effects, particularly affecting high-frequency signals with high linearity and sensitivity to path loss.
Innovation Solution
The electronic device incorporates a housing with a conductive and non-conductive portion, an antenna structure, and a pen input device that overlaps a non-conductive portion when attached, allowing the pen input device to be electromagnetically coupled and extending coverage while minimizing the impact on antenna radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pen input device is detachably attached to an electronic device, then the device functionality is enhanced, but the antenna radiation performance deteriorates due to electromagnetic effects
Solution Approach 1:
A non-conductive portion is introduced as an intermediary element between the conductive housing and the antenna. This non-conductive portion acts as a mediator that reduces the electromagnetic interference from the pen input device while maintaining the structural integrity and functionality of the housing, thereby resolving the contradiction between enhanced device functionality and maintained antenna radiation performance
Solution Approach 2:
The housing is designed with differentiated local properties: a conductive portion for structural strength and a non-conductive portion specifically positioned to reduce electromagnetic interference with the antenna. This local differentiation allows the housing to simultaneously provide mechanical support while minimizing negative electromagnetic effects on antenna radiation performance
2Area of stationary object
If the pen input device is positioned to overlap the antenna area, then electromagnetic coupling is achieved to extend coverage, but the antenna radiation performance is affected
Solution Approach 1:
The non-conductive portion serves as an intermediary that allows the pen input device to be positioned in the coverage area while preventing direct electromagnetic interference. This mediator enables the pen device to extend coverage through electromagnetic coupling without degrading the antenna's radiation performance
Solution Approach 2:
The electromagnetic properties of the housing are changed by introducing a non-conductive portion with different electrical characteristics. This parameter change allows the housing to maintain structural functionality while modifying the electromagnetic environment to reduce interference and enable extended coverage
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
This configuration secures antenna radiation performance and extends coverage by reducing the effect of the pen input device on the antenna, ensuring reliable communication and signal strength.
Implementation Method 1
The pen input device may have an electromagnetic effect on an antenna device... the first non-conductive portion and the second non-conductive portion reduce the effect of the pen input device on the antenna structure
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing comprising a conductive part, and a first nonconductive part connected to the conductive part, an antenna structure positioned inside the housing, and a pen input device attachable/detachable to/from the housing, wherein the pen input device comprises a second nonconductive part having at least a portion thereof overlapping the first nonconductive part when viewed in a direction in which a main beam of the antenna structure is radiated while the pen input device is attached to the housing, and at least a portion of the at least one antenna element overlaps the first nonconductive part and the second nonconductive part.