Flexible RFID Antenna Helical Coil Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional RFID antenna production for POS devices is inefficient, leading to increased costs and material wastage due to the need for double-sided substrates and complex production processes.
Innovation Solution
A single-sided flexible RFID antenna design with a flexible covering layer and conductors arranged in a helical coil, where the ends are connected via a connector, eliminating the need for through holes and simplifying the production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a double-sided base material is used to connect inner periphery to outer periphery through through holes, then the antenna can be manufactured, but the cost increases and the production process becomes complicated
Solution Approach 1:
The patent extracts and eliminates the need for through holes by using a single-sided base material. The conductor pattern is designed to extend to the edges of the substrate, and connection terminals are provided at these edges, removing the complex through-hole structure entirely. This simplifies both the substrate design and the manufacturing process.
Solution Approach 2:
Instead of connecting the inner periphery to the outer periphery through through holes in the conventional manner, the patent inverts the approach by providing connection terminals directly at the outer edges of the substrate. The conductor pattern naturally extends to these edges, eliminating the need for through-hole connections and simplifying the overall structure.
2Loss of substance
If a double-sided base material with through holes is used, then the antenna can be assembled, but material utilization decreases and costs increase
Solution Approach 1:
The patent removes the wasteful through-hole structure entirely, using a single-sided base material where the conductor pattern extends directly to the substrate edges. This eliminates material waste associated with through-hole drilling and filling, improving material utilization efficiency and reducing manufacturing costs.
3Productivity
If conventional RFID antenna technology is used, then the antenna can be manufactured, but the production process is inefficient and time-consuming
Solution Approach 1:
The patent eliminates the time-consuming through-hole drilling, alignment, and filling processes by using a single-sided base material with edge-extended conductor patterns. This streamlines the manufacturing process, significantly improving production efficiency and reducing manufacturing time.
Solution Approach 2:
The conductor pattern is designed in advance to extend directly to the substrate edges, and connection terminals are pre-positioned at these edges. This preliminary design eliminates the need for subsequent through-hole processing steps, streamlining the manufacturing process and improving productivity.
Data Source
AI summary
An RFID antenna for a POS device has a slender, single-sided, flexible substrate with a first end and a second end. Multiple conductors extend along the substrate, from the first end to the second end. A flexible covering layer is attached to the substrate and covers the conductors. The substrate is wrapped to superimposed the ends of the substrate. A connector connects the ends of the conductors on the first end of the substrate to the ends of the conductors on the second end of the substrate whereby the plurality of conductors form an antenna in the form of a continuous helical coil.