Peripheral Display Antenna in Electronic Device
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Solution Overview
Problem
Incorporating wireless components like antennas into electronic devices can lead to increased space consumption and unsatisfactory wireless performance if not designed properly.
Innovation Solution
An electronic device with a housing that includes a recessed display cover layer for mounting an inverted-F antenna structure, utilizing a metal trace on a plastic antenna support and a metal housing as the antenna ground, with springs forming the antenna feed and return path, and a flexible printed circuit for coupling the antenna to the transceiver circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an antenna is incorporated into an electronic device, then wireless communication capability is provided, but the device consumes more space and may exhibit unsatisfactory wireless performance
Solution Approach 1:
The antenna structure is merged with the display cover layer by forming the resonating element from a metal trace on a plastic antenna support structure that is mounted in a recess of the display cover layer. This integration allows the antenna to occupy space within the existing display structure rather than requiring separate antenna housing space.
Solution Approach 2:
The antenna resonating element is positioned in a recess of the display cover layer, utilizing the vertical dimension (depth of recess) rather than only horizontal plane space. This three-dimensional placement optimizes space utilization within the device profile.
2Adaptability or versatility
If an antenna is incorporated into an electronic device, then wireless communication capability is provided, but unsatisfactory wireless performance may occur
Solution Approach 1:
A plastic antenna support structure serves as an intermediary between the metal trace resonating element and the mounting recess. This support structure provides proper positioning, mechanical support, and electrical isolation, ensuring stable electrical characteristics and reliable wireless performance.
Solution Approach 2:
The display cover layer is designed with a specific recess geometry tailored for the antenna structure. This localized structural modification provides optimal positioning and electrical characteristics for the antenna while maintaining the overall integrity of the display assembly.
3Reliability
If a metal housing is used as antenna ground, then antenna performance is improved, but device complexity increases
Solution Approach 1:
The metal housing serves multiple functions: it provides structural support for the device, acts as the antenna ground plane, and serves as a mounting surface for the spring biasing structure. This multi-functionality improves antenna performance without significantly increasing overall device complexity.
Data Source
AI summary
An electronic device may be provided with electrical components mounted in a housing. The electronic device may include wireless transceiver circuitry and antenna structures. A display may be mounted in the housing. The display may have a transparent layer such as display cover layer. The display cover layer may have an inner surface with a recess. The recess may be a groove that runs along a peripheral edge of the display cover layer. An antenna structure such as an inverted-F antenna resonating element may be formed from a metal trace on a plastic support structure. The metal trace and support structure may be mounted in the groove with adhesive. The housing may be a metal housing that forms an antenna ground. Springs may be used in forming an antenna feed and an antenna return path that couples the antenna resonating element to ground.