Chipless Passive ID Tag Resonance Layers for Higher Data Capacity
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Solution Overview
Problem
Traditional passive identification tags rely on expensive microchips and antennas, making them costly and complex, while chipless tags lack data storage capacity, limiting their application in inventory and tracking systems.
Innovation Solution
The development of chipless passive identification tags with a layered structure, including a substrate and a resonance layer with resonant structures made of conductive, semiconductor, or dielectric materials, fabricated using additive and subtractive manufacturing techniques, eliminating the need for microchips and antennas, thereby reducing size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional passive identification tags use microchips and antennas, then data storage capacity and read range are improved, but fabrication cost and device complexity increase
Solution Approach 1:
The patent extracts and removes the microchip component from the passive identification tag system. Instead of using a traditional microchip to store identification data, the invention encodes data directly into the geometric structure of the antenna itself through modified resonant frequencies, thereby eliminating the need for separate chip components while maintaining data storage functionality.
Solution Approach 2:
The patent merges the functions of the antenna and the data storage chip into a single integrated structure. The antenna geometry is specifically designed so that its resonant characteristics encode identification information, combining the electromagnetic radiation function and the data storage function into one unified component, thus reducing overall device complexity.
2Loss of information
If active identification tags are used to provide richer information and longer read range, then information capacity and read range are improved, but fabrication cost and size increase
Solution Approach 1:
The patent employs inexpensive materials such as conductive ink or metallic paint applied to substrate materials like paper, plastic, or fabric. These low-cost materials can be easily deposited using printing techniques, enabling mass production of passive tags with rich information capacity without requiring expensive active electronics or complex manufacturing processes.
Solution Approach 2:
The patent changes the operational parameters by using modified resonant frequencies of the antenna structure to encode information. Instead of relying on active electronics to generate and modulate signals, the system uses passive resonant frequency shifts caused by geometric modifications to the antenna, allowing rich information encoding through simple geometric parameter variations.
3Device complexity
If chipless passive identification tags are used to reduce size and cost, then fabrication cost and size are reduced, but data storage capacity decreases
Solution Approach 1:
The patent transitions from using temporal or digital dimensions for data storage (as in traditional chips) to using the geometric dimension of the antenna structure. By encoding information in the spatial geometry of the antenna—such as variations in length, width, shape, or configuration—the system achieves high information capacity in a physically compact form factor, effectively utilizing spatial dimensionality for data encoding.
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 enables the creation of cost-effective, compact passive identification tags with enhanced data storage capacity, suitable for inventory and tracking applications, by utilizing resonant structures to generate unique tag responses without the need for internal power sources or complex manufacturing processes.
Implementation Method 1
a resonance layer disposed on the substrate and having a resonant structure, where the resonant structure generates a tag response in response to receiving an incoming detection signal
Data Source
AI summary
Systems, apparatus, and methods for fabricating passive identification tags are provided. A method for fabricating a passive identification tag can include: determining a pattern for a resonant structure of a resonance layer of the passive identification tag, and/or determining a pattern for a dielectric structure of a characteristic layer to be disposed on the resonance layer. The method can further include: generating, based on the pattern for the resonant structure, the resonant structure on a substrate to form the resonance layer. The resonant structure generated by the method can respond to an incoming detection signal by transmitting or reflecting a tag response. The method can further include: generating, based on the pattern for the dielectric structure, the dielectric structure on the resonance layer to form the characteristic layer. The dielectric structure can modify the tag response, so that a modified tag response is transmitted or reflected to a receiver.