Palm Rest Antenna Layout for Hand Interference Mitigation
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Solution Overview
Problem
Existing electronic devices face challenges in optimizing antenna design to minimize interference from user hand placement while maintaining efficient wireless communication across multiple frequency bands.
Innovation Solution
The electronic device incorporates an antenna design that overlaps with a palm rest, featuring a feed pattern and grip sensing pattern, with separate ground areas connected to the housing, allowing for reduced interference and improved signal transmission across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is disposed to overlap the palm rest, then wireless communication performance is improved, but hand interference increases
Solution Approach 1:
The antenna is divided into two distinct patterns: a feed pattern for wireless communication and a grip sensing pattern for detecting hand presence. This segmentation allows the antenna to simultaneously perform communication functions while independently sensing hand interference, enabling the system to mitigate the harmful effects of hand placement on communication performance.
Solution Approach 2:
The antenna structure serves multiple functions: it provides wireless communication through the feed pattern and simultaneously detects grip status through the grip sensing pattern. This multi-functionality allows the same antenna structure to both improve wireless communication performance and detect hand interference, resolving the contradiction between these two requirements.
2Reliability
If separate ground areas are used for feed and grip sensing patterns, then signal transmission is improved, but device complexity increases
Solution Approach 1:
The feed pattern and grip sensing pattern are merged into a single antenna structure that shares common elements (such as the coupling area and partial ground connections) while maintaining separate functional zones. This merging reduces device complexity compared to completely separate antenna systems, while the distinct ground areas ensure proper signal transmission by preventing interference between the two patterns.
Data Source
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AI summary
This electronic apparatus may comprise a housing, a keyboard, a palm rest, and an antenna disposed inside the housing so as to overlap the palm rest. The antenna includes: a feed pattern disposed in a rest region that is far away from the keyboard among a plurality of rest regions; and a grip sensing pattern disposed in a rest region that is adjacent to the keyboard among the plurality of rest regions. The feed pattern may include a first ground region connected to the housing and a feed region connected to the first ground region. The grip sensing pattern may include a second ground region connected to the housing and a coupling region connected to the second ground region and configured to be coupled to the feed region.