Antenna Orientation for Convertible Tablet Miniaturization
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Solution Overview
Problem
Convertible computers face challenges in maintaining constant antenna performance due to the need to keep antennas distant from electrically conductive touch operation units, which limits their miniaturization and portability.
Innovation Solution
The arrangement of antennas in the first housing, where the fourth antenna, designed for the highest frequency, overlaps the electrically conductive member in a perpendicular direction, minimizing electrical interference and allowing for miniaturization without compromising performance, while other antennas are positioned to avoid the conductive member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is kept distant from the touch operation unit to maintain antenna performance, then the tablet size increases, but the device becomes bigger and less portable
Solution Approach 1:
The patent positions the fourth antenna in a perpendicular direction relative to the touch operation unit, utilizing the vertical dimension (z-axis) rather than horizontal spacing. This allows the antenna to be directly above the conductive member without requiring lateral distance, thereby maintaining compact tablet dimensions while ensuring adequate electromagnetic isolation for optimal antenna performance.
2Volume of moving object
If the tablet is miniaturized to improve portability, then the distance between the antenna and touch operation unit decreases, but antenna performance deteriorates
Solution Approach 1:
By arranging the fourth antenna perpendicular to the touch operation unit, the design enables miniaturization of the tablet while maintaining antenna performance. The perpendicular positioning creates effective electromagnetic isolation without requiring increased horizontal spacing, allowing compact form factor and improved portability.
Solution Approach 2:
The patent applies different spatial arrangements to different antennas based on their specific requirements. The fourth antenna, operating at the highest frequency, is positioned perpendicular to the touch operation unit to minimize interference, while other antennas are positioned to avoid the conductive member. This localized optimization allows overall device miniaturization while maintaining each antenna's performance.
Data Source
AI summary
An electronic apparatus in one embodiment is brought to a tablet state, in which a first housing having antennas and a display unit is placed over a second housing having an electrically conductive member and allows input from the display unit. In the tablet state, a part of one of the antennas is over the electrically conductive member.