Disposable RFID Tag with Parallel Interrupter and Delay Circuit
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Solution Overview
Problem
Current RFID technologies, particularly passive RFID methods, face challenges in simplicity and manufacturing complexity, especially in creating disposable tags that can efficiently transmit and receive signals without a separate power source and with easy manufacturing processes.
Innovation Solution
A disposable radio frequency identification tag design incorporating a substrate with an antenna unit, an integrated circuit unit, and a delay circuit unit connected in parallel, featuring an interrupter with variable and fixed portions, and a delay circuit with a capacitor and resistor, which can be manufactured through a printing process using materials like polydimethylsiloxane, silver nanowire, and metal nanoparticles, allowing for signal modulation and energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a passive RFID method is used without a separate power source, then the device complexity is reduced, but the reliability of signal transmission may be compromised due to energy limitations
Solution Approach 1:
The patent combines the antenna unit and integrated circuit unit into a single RFID tag structure, eliminating the need for separate power source components. The antenna unit directly receives electromagnetic energy from the reader and transfers it to the integrated circuit unit,实现ing contactless power and signal transmission in one integrated system.
Solution Approach 2:
The antenna unit serves dual functions: it acts as both the receiving antenna for electromagnetic energy and as part of the signal transmission pathway. This multi-functional design reduces component count and simplifies the overall structure while maintaining reliable operation through the universal electromagnetic coupling mechanism.
2Ease of manufacture
If traditional RFID manufacturing processes are used, then the manufacturing precision may be maintained, but the ease of manufacture is reduced due to complex assembly steps
Solution Approach 1:
The patent integrates multiple components (antenna unit, integrated circuit unit, and connecting structures) into a unified RFID tag design that can be manufactured as a single unit or pre-assembled module. This merging eliminates complex multi-step assembly processes while maintaining manufacturing precision through integrated design and standardized manufacturing techniques.
3Volume of moving object
If the antenna unit and integrated circuit unit are placed close together, then the device size is reduced, but the signal interference between components increases
Solution Approach 1:
The patent employs asymmetric spatial arrangement of the antenna unit and integrated circuit unit, positioning them at specific orientations and distances that minimize electromagnetic coupling and signal interference. The asymmetric design allows compact packaging while maintaining signal integrity through optimized component placement and orientation.
4Loss of substance
If disposable RFID tags are designed for single use, then the loss of substance is reduced through material simplicity, but the durability and reliability are compromised
Solution Approach 1:
The patent designs the RFID tag with simple, inexpensive materials and a compact structure suitable for disposable applications. The integrated circuit unit and antenna unit are configured to provide sufficient operational lifespan for single-use scenarios while minimizing material consumption and manufacturing cost, making the tag economically viable for disposable deployment.
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
The solution enables a low-complexity, easily manufacturable RFID tag that can efficiently transmit and receive signals, manage energy, and automatically stop operations without additional electrical manipulation, suitable for applications like agricultural product management, with potential for cost-effective and flexible deployment.
Implementation Method 1
The RFID reader transmits a signal towards the RFID tag. The RFID tag receives a signal transmitted from the RFID reader.
Implementation Method 2
The RFID tag modulates the received signal and retransmits it to the RFID reader. the interrupter may be configured to be transformed by heating
Implementation Method 3
the delay circuit unit includes a capacitor and a resistor
Implementation Method 4
the delay circuit unit includes a capacitor and a resistor
Implementation Method 5
The RFID reader provides energy to the RFID tag in a contactless manner. The RFID tag operates using energy supplied from an RFID reader.
Data Source
AI summary
Provided are a radio frequency identification tag and a method of manufacturing the same. The radio frequency identification tag includes a substrate, an antenna unit provided on the substrate and configured to transmit and receive signals, an integrated circuit unit spaced apart from the antenna unit on the substrate, and an interrupter and a delay circuit unit connected in parallel between the antenna unit and the integrated circuit unit, wherein the interrupter includes a variable portion and a fixed portion opposite the variable portion, wherein the delay circuit unit includes a capacitor and a resistor.