Transponder Label with Dielectric Spacer for Metal Surface Data Exchange
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Solution Overview
Problem
RFID transponders face challenges in data exchange when applied to metallic surfaces due to interference from electrically conductive components, leading to impeded data transmission and reception.
Innovation Solution
A transponder label design featuring a dielectric spacer body with a transponder inlay and sensor unit, where the antenna is folded around the spacer to create a stripline antenna, enabling reliable data exchange on metal surfaces while incorporating a sensor unit for environmental parameter detection and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a transponder is applied directly to a metal surface, then the structure is simple and production cost is low, but data exchange is impeded due to electromagnetic interference from the conductive metal surface
Solution Approach 1:
A dielectric spacer body is introduced as an intermediary element between the transponder inlay and the metal surface. This spacer body electrically isolates the antenna from the conductive metal surface, preventing electromagnetic interference while maintaining a simple and cost-effective manufacturing process. The spacer can be integrated into the label structure during production.
Solution Approach 2:
The antenna is designed to wrap around the spacer body in a three-dimensional configuration rather than lying flat on a two-dimensional surface. This spatial arrangement creates distance between the antenna and the metal surface, reducing electromagnetic coupling and interference while maintaining data exchange reliability.
2Reliability
If a dielectric spacer body is introduced to improve data exchange on metal surfaces, then data exchange reliability is improved, but device complexity and production cost increase
Solution Approach 1:
The dielectric spacer body is merged with the label substrate or adhesive layer, combining multiple functions into a single integrated component. This eliminates the need for separate spacer elements and reduces overall structural complexity while maintaining electrical isolation and improving data exchange reliability.
Solution Approach 2:
The spacer body serves multiple functions simultaneously: it provides electrical isolation between the antenna and metal surface, acts as a mechanical support structure for the transponder inlay, and can function as part of the adhesive system for mounting the label. This multi-functionality reduces the need for additional components.
3Reliability
If the antenna is folded around the spacer body to create a stripline antenna, then reading range and interference suppression are improved, but manufacturing precision requirements increase
Solution Approach 1:
The antenna is pre-formed in a folded or three-dimensional configuration during the manufacturing process, before final assembly. This preliminary shaping ensures consistent geometric properties and electrical characteristics, reducing variability and the need for high-precision adjustments during final assembly.
Solution Approach 2:
The antenna geometry is optimized by folding it around the spacer body, changing its spatial parameters to create a stripline configuration. This parameter change improves electromagnetic field distribution and reading range while the standardized folding pattern maintains manufacturing feasibility.
4Adaptability or versatility
If a sensor unit is added to detect environmental parameters, then functionality is extended, but device complexity and production cost increase
Solution Approach 1:
The sensor unit is integrated with the transponder inlay and dielectric spacer body, combining multiple functional elements into a single unified structure. This merging approach extends functionality to detect environmental parameters while minimizing the increase in overall device complexity through shared structural components.
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
Enables reliable and stable data exchange and sensor data transmission on metallic substrates, reducing production costs and offering extended functionality with improved reading range and interference suppression.
Implementation Method 1
Since electromagnetic waves are required for data exchange between the transponder and the reader
Implementation Method 2
a dielectric spacer body having a first side and a second side... enabling reliable data exchange on metal surfaces
Data Source
AI summary
A transponder label has a dielectric spacer body with a first side and a second side and a transponder inlay with a chip and an antenna, wherein the transponder inlay is applied to the spacer body such that a first part of the antenna is arranged on the first side of the spacer body and a second part of the antenna is arranged on the second side of the spacer body. The transponder label further includes a sensor unit electrically coupled to the chip of the transponder inlay and configured to detect a measurement signal representative of a physical and/or chemical environmental parameter.