NFC Antenna Positioning Around Touch Panel
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Solution Overview
Problem
Portable electronic devices with NFC functions often experience weak and unstable NFC communication quality due to signal interference from metal elements on the housing and obstruction by the user's hand or surfaces, such as desks.
Innovation Solution
The NFC antenna is strategically positioned around the touch panel or sandwiched between the touch panel and display module, allowing signal transmission through the screen while maintaining an integrated outer surface and avoiding interference from the device's housings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the NFC antenna is mounted at the inner side of the rear housing, then the device structure is simple, but the NFC communication quality becomes weak and unstable due to signal interference from metal elements and obstruction by user's hand or surfaces
Solution Approach 1:
The NFC antenna is extracted from the rear housing and repositioned to be disposed around the touch panel, separating it from metal elements that cause signal interference. This extraction resolves the contradiction by removing the antenna from the interfering environment while maintaining structural simplicity through integration with the existing touch panel assembly.
Solution Approach 2:
The NFC antenna is transitioned from a two-dimensional planar layout at the rear housing to a three-dimensional configuration around the touch panel edges. This dimensional change allows the antenna to operate in a spatial region free from metal interference and user hand obstruction, improving communication reliability without significantly increasing device complexity.
2Reliability
If the NFC antenna is positioned around the touch panel, then the NFC signal radiation quality is enhanced, but the device structure becomes more complex
Solution Approach 1:
The NFC antenna structure is merged with the touch panel assembly, where the antenna is disposed around the touch panel and electrically connected to the NFC module. This integration achieves enhanced NFC signal radiation quality while avoiding separate complex mounting structures, as the antenna utilizes the existing touch panel framework.
Solution Approach 2:
The touch panel assembly serves multiple functions: it acts as both the user interface component and the structural support for the NFC antenna. This multi-functionality reduces overall device complexity by eliminating the need for dedicated antenna mounting structures, while still achieving improved NFC signal radiation quality.
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 enhances NFC signal radiation quality and stability by positioning the NFC antenna to transmit signals effectively without being blocked by the device's housings or user obstructions, ensuring reliable NFC communication.
Implementation Method 1
The NFC antenna includes a plurality of coiled wire loops connected to the NFC module. The NFC antenna is commonly mounted at an inner side of a rear housing of the portable electronic device.
Data Source
AI summary
A portable electronic device includes a first housing, a second housing to the first housing, a circuit board, a display module, a touch panel, a near field communication (NFC) module, and a NFC antenna. The circuit board, the display module, the touch panel, the NFC module and the NFC antenna are orderly mounted in a space between the first housing and the second housing. The NFC antenna is set around the touch panel or at one side of the touch panel or the NFC module.