NFC Housing Structure with Spaced Connector to Prevent Signal Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing NFC wearables face challenges in maintaining a compact and comfortable design while ensuring that the connector does not interfere with the NFC chip, which can disrupt electromagnetic signals.
Innovation Solution
A housing structure for NFC chips is designed with a first housing made of radio-transparent material featuring recesses and a lobe, allowing a connector to be secured at a distance from the NFC chip, preventing interference by using a metallic link that does not act as an antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connector is integrated into the housing body, then the device structure is simplified and manufacturing is easier, but the connector interferes with the NFC chip and disrupts electromagnetic signals
Solution Approach 1:
The housing is divided into two separate parts: a first housing containing the NFC chip and a second housing containing the connector. This segmentation physically separates the connector from the NFC chip, preventing electromagnetic interference while maintaining structural integrity and ease of manufacture through modular assembly.
Solution Approach 2:
A non-conductive material is introduced as an intermediary between the connector and the NFC chip. This intermediary material blocks the electromagnetic interference from the connector while allowing the NFC chip to function normally, effectively mediating between the conflicting requirements of integration and signal quality.
2Volume of moving object
If the connector is placed close to the NFC chip, then the device size is reduced and wearability is improved, but the connector acts as an antenna and interferes with NFC communication
Solution Approach 1:
By segmenting the housing into two separate units, the design maintains compact overall dimensions while creating sufficient internal separation between the connector and NFC chip. The modular structure allows close placement of components without direct contact, reducing the device volume while preventing the connector from acting as an antenna.
Solution Approach 2:
A non-conductive intermediary material is positioned between the connector and NFC chip to eliminate the antenna effect. This intermediary blocks electromagnetic coupling while allowing the components to remain in close proximity, thus maintaining small device size without generating harmful electromagnetic interference.
3Device complexity
If the connector is integrated into the housing, then device complexity is reduced, but the NFC chip cannot be effectively protected from interference
Solution Approach 1:
The housing is segmented into two separate housings that can be easily assembled and disassembled. This segmentation reduces structural complexity by allowing independent manufacturing and assembly of the NFC-containing housing and the connector-containing housing, while simultaneously protecting the NFC chip from interference through physical separation.
Solution Approach 2:
A non-conductive intermediary material is introduced to protect the NFC chip from electromagnetic interference generated by the connector. This intermediary acts as a shield that maintains reliable NFC communication while allowing the overall device structure to remain simple and easy to manufacture.
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
The solution ensures that the NFC chip is protected and maintains effective communication by keeping the connector spaced sufficiently away, thus preventing signal interference and enhancing the wearability of NFC devices.
Implementation Method 1
a first housing formed of a first radio-transparent material and having an outer perimeter surface... a second housing formed of a second radio-transparent material
Data Source
AI summary
An embodiment device includes a first housing formed of a first radio-transparent material and having an outer perimeter surface including a first outer perimeter portion and a second outer perimeter portion, the outer perimeter surface having one or more recesses, each of the one or more recesses extending from one of the first outer perimeter portion or the second outer perimeter portion into a body of the first housing, a second housing formed of a second radio-transparent material and secured to the first housing, a near field communication (NFC) chip disposed between the first housing and the second housing, a link having a first end and a second end extending into the body of the first housing.