RFID Transponder Antenna Groove Formation Sequence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in producing RFID transponders lies in accurately positioning antenna elements with respect to the RFID chip without damaging the chip during the cutting process, while maintaining the strength and rigidity of the conductive sheet, and ensuring consistent radio frequency performance.
Innovation Solution
The method involves forming a first groove in a conductive sheet before attaching the RFID chip, and then cutting a second groove to form the antenna element after the chip is attached, thereby reducing the risk of chip damage and allowing for precise positioning and accurate impedance control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the antenna elements are cut from the conductive sheet before attaching the RFID chip, then the chip positioning accuracy with respect to the antenna elements is improved, but the risk of damaging the chip with the cutting laser beam increases
Solution Approach 1:
A first groove is formed in the conductive sheet before the RFID chip is attached. This preliminary groove defines part of the antenna element structure in advance, allowing the chip to be positioned accurately relative to the groove. The chip is then attached to the conductive sheet such that its connecting elements align with the groove, ensuring precise positioning without requiring the chip to be present during the final cutting operation.
Solution Approach 2:
The antenna element formation process is divided into two stages: first, a groove is cut to define the basic structure; second, the remaining portions are cut after chip attachment to complete the antenna elements. This segmentation allows the chip positioning step to occur when the structure is more stable and less prone to laser damage, while still achieving precise final positioning.
2Ease of manufacture
If the final shape of the antenna elements is etched before attaching the RFID chip, then the manufacturing process is simpler, but the positioning accuracy of the chip with respect to the terminal parts of the antenna elements deteriorates
Solution Approach 1:
The first groove is formed as a preliminary structure that guides chip placement. This groove serves as a reference feature that ensures the chip will be positioned correctly relative to the antenna elements, combining the benefits of early structure formation with accurate final positioning.
3Manufacturing precision
If grooves are formed before attaching the RFID chip, then the chip positioning accuracy is improved, but the strength and rigidity of the conductive sheet is reduced
Solution Approach 1:
The cutting process is segmented into two phases: first, a groove is cut that defines the antenna structure but leaves connecting portions intact to maintain sheet strength; second, after the chip is attached, the remaining portions are cut to complete the antenna elements. This ensures the chip is positioned on a structurally sound substrate.
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 approach enhances the accuracy of antenna element positioning, reduces variations in impedance, and ensures more consistent and reliable RFID operation, while also enabling the production of substrateless transponders with lower manufacturing costs and reduced waste.
Implementation Method 1
forming a first groove in a conductive sheet... forming a second groove in the conductive sheet by using a laser beam
Data Source
AI summary
A method for producing a radio frequency identification transponder includesforming a first groove in a conductive sheet such that a portion of said conductive sheet surrounds the first groove,attaching an RFID chip to the conductive sheet after the first groove has been formed such that the first groove is located between a first connecting element of the chip and a second connecting element of the chip, andforming a second groove in the conductive sheet after the chip has been attached so as to form an antenna element of said transponder.