Palm Rest Antenna Structure for Grip Sensing and Interference Control
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Solution Overview
Problem
Existing electronic devices face challenges in optimizing antenna design to accommodate both high-speed wireless communication and user ergonomics, particularly in devices with keyboards and palm rests, leading to potential interference and reduced performance.
Innovation Solution
The design incorporates an antenna that overlaps with a palm rest, featuring a feed pattern and grip sensing pattern, with separate ground areas connected to the housing, allowing for dual-frequency operation and improved signal transmission without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the antenna is disposed to overlap the palm rest to improve user ergonomics and device integration, then ease of operation and device compactness are improved, but signal interference and communication reliability deteriorate
Solution Approach 1:
The antenna is divided into two distinct patterns: a feed pattern for wireless communication and a grip sensing pattern for detecting user hand placement. This segmentation allows each pattern to be optimized for its specific function while sharing the same physical space over the palm rest, resolving the conflict between ergonomics and communication reliability.
Solution Approach 2:
Different regions of the antenna structure are assigned different functions: the feed pattern is positioned and configured for optimal wireless signal transmission, while the grip sensing pattern is positioned to detect hand grip. This local differentiation of quality and function allows the antenna system to simultaneously achieve good ergonomics and reliable communication without mutual interference.
2Adaptability or versatility
If dual-frequency operation is implemented to enhance communication versatility, then adaptability is improved, but device complexity and antenna design difficulty worsen
Solution Approach 1:
The antenna structure is designed to operate across multiple frequency bands (first and second frequency bands) using a single unified configuration. The feed pattern and grip sensing pattern are configured to support both frequency bands simultaneously, eliminating the need for separate antenna systems for each frequency and thereby reducing overall device complexity while maintaining versatility.
Solution Approach 2:
The antenna design utilizes parameter optimization to achieve broad frequency coverage. By carefully selecting and adjusting geometric parameters of the feed pattern and grip sensing pattern, the antenna can efficiently operate across different frequency bands without requiring complex switching mechanisms or multiple separate antenna structures.
3Reliability
If separate ground areas are used for feed pattern and grip sensing pattern to reduce interference, then communication reliability is improved, but manufacturing complexity and assembly difficulty worsen
Solution Approach 1:
The feed pattern and grip sensing pattern with their separate ground areas are integrated into a single antenna assembly that is disposed together over the palm rest. This merging of components into one unified structure simplifies manufacturing and assembly compared to having separate antenna modules, while the separate ground areas within the assembly maintain signal integrity and reduce interference.
Data Source
AI summary
An electronic apparatus is provided. The electronic apparatus includes a housing including a first portion and a second portion different from the first portion, a keyboard disposed in the first portion of the housing, a palm rest disposed in the second portion of the housing and a rest area, and an antenna disposed inside the housing so as to overlap the palm rest. The antenna includes a feed pattern disposed in a rest area away from the keyboard, the feed pattern including a first ground area connected to the housing, and a feed area connected to the first ground area, a grip sensing pattern disposed in the rest area adjacent to the keyboard, the grip sensing pattern including a second ground area connected to the housing and a coupling area connected to the second ground area and configured to be coupled to the feed area.