RFID Transponder Embedding in Paper via Perforated Carrier Strip
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Solution Overview
Problem
Existing methods for embedding electronic devices, such as RFID transponders, into paper lack the ability to ensure robust and reliable wireless communication over a long range while maintaining the integrity and flexibility of the paper substrate.
Innovation Solution
A method involving a carrier strip with perforations and bridges is used to securely embed RFID transponders within the paper, where the transponders include integrated circuits and antennas configured to operate in specific frequency bands, ensuring reliable wireless communication and preventing dislodging during the papermaking process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID transponders are embedded in paper using conventional methods, then the paper can contain electronic devices, but the wireless communication range and reliability are limited
Solution Approach 1:
The patent uses a flexible carrier strip made of thin film material to embed the RFID transponder within the paper. This flexible substrate allows the antenna to maintain its electrical characteristics while being integrated into the paper matrix, enabling reliable wireless communication over extended ranges without compromising the paper's flexibility and integrity.
Solution Approach 2:
The patent optimizes the antenna dimensions, conductor trace geometry, and substrate material properties to enhance the RFID transponder's communication range and reliability. By adjusting these parameters during the embedding process, the system achieves robust wireless communication while maintaining paper integrity.
2Strength
If the carrier strip is made impermeable to fiber slurry, then the electronic device is protected, but the papermaking process is disrupted
Solution Approach 1:
The carrier strip is designed with a porous structure that allows fiber slurry to pass through during the papermaking process. This porosity enables the electronic device to be embedded within the paper matrix without disrupting the manufacturing process, while still providing protection through the integrated structure.
Solution Approach 2:
The patent creates a composite structure where the carrier strip material is integrated with the paper fibers. This composite approach allows the carrier strip to provide device protection while maintaining compatibility with the papermaking process, as the strip becomes an integral part of the paper matrix.
3Length of stationary object
If the antenna size is increased for longer communication range, then the wireless communication range is extended, but the device size exceeds the paper surface area
Solution Approach 1:
The patent transitions the antenna design from a two-dimensional surface layout to a three-dimensional embedded structure within the paper. By utilizing the thickness dimension and creating folded or layered antenna configurations, the system achieves extended communication range while keeping the footprint on the paper surface within acceptable limits.
Solution Approach 2:
The antenna structure is nested within the paper matrix and carrier strip configuration. By folding the antenna traces and embedding them in multiple layers, the effective antenna area is increased for longer communication range while the external dimensions remain compact and suitable for paper integration.
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 allows for the creation of RFID-enabled paper with robust and reliable wireless communication capabilities over extended ranges, maintaining the paper's integrity and flexibility, and enabling new applications and markets for embedded electronic devices.
Implementation Method 1
The antenna is configured to operate in a predetermined frequency band and to be large enough to ensure a robust and reliable wireless communication over a range that is long enough for an application
Data Source
AI summary
Among other things, a sheet has a thickness and extends in two dimensions normal to the thickness of the sheet. Within the sheet there is an electronic device having an integrated circuit and conductive elements connected to the integrated circuit. The electronic device extends in the two dimensions, the extent of the device in each of the two dimensions being greater than 3 mm.