Detachable RFID Switch Tag for Multi-Frequency Operation
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Solution Overview
Problem
Conventional RFID tags lack flexibility to operate effectively across multiple frequencies, limiting their application in diverse environments such as electronic toll collection systems that require different frequency ranges.
Innovation Solution
A radio frequency identification (RFID) switch tag design featuring a base component with an ultra-high frequency (UHF) booster and a detachable component containing both UHF and high-frequency (HF) RFID modules, allowing configuration changes to support operations in multiple frequencies by coupling or decoupling the modules as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional RFID tag uses a fixed frequency design, then the tag structure is simple and manufacturing is easy, but the tag cannot operate in multiple frequencies limiting application versatility
Solution Approach 1:
The RFID tag is divided into separate functional modules: a base component containing a UHF booster antenna and a detachable component containing RFID circuitry that can be configured for different frequencies. This segmentation allows the same base component to work with different frequency modules, enabling multi-frequency operation without redesigning the entire tag structure.
Solution Approach 2:
The base component with the UHF booster antenna is designed to be universal and can support multiple frequency operations by pairing with different detachable RFID modules. The booster antenna structure is configured to enhance both UHF and HF frequency operations, making the system multi-functional while maintaining a consistent base design.
2Adaptability or versatility
If an RFID tag is designed with multiple frequency modules integrated, then multi-frequency operation is achieved, but the tag size and complexity increase
Solution Approach 1:
The frequency-specific RFID circuitry is extracted from the base component and placed in detachable modules. This allows the base component to remain compact while supporting multiple frequencies through interchangeable modules. The UHF booster antenna is integrated in the base, but the frequency-determining circuitry is separated, reducing the permanent volume requirement.
Solution Approach 2:
The detachable RFID module is designed to attach to or be integrated within the base component structure, creating a nested configuration where the frequency module fits into the booster antenna housing. This nesting approach minimizes the overall tag volume when modules are combined.
3Adaptability or versatility
If the RFID tag uses a detachable component design, then configuration flexibility is improved, but the ease of operation and reliability of connection may be reduced
Solution Approach 1:
The RFID tag system transitions from a static integrated design to a dynamic reconfigurable system where modules can be attached and detached. The coupling mechanism incorporates dynamic elements such as spring-loaded contacts or magnetic attachments that automatically establish electrical connections when modules are brought together, reducing the operational complexity despite the detachable nature.
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
Enables the RFID switch tag to function seamlessly in various applications, including electronic toll collection systems for high and single occupancy vehicle lanes, by adjusting its frequency operation based on configuration, thereby enhancing operational flexibility and versatility.
Implementation Method 1
ultra-high frequency (UHF) booster, such as an UHF booster antenna
Implementation Method 2
high frequency (HF) RFID module, such as a near-field communication (NFC) tag
Data Source
AI summary
A radio frequency identification (RFID) switch tag is disclosed. This RFID switch tag includes a base component having an ultra-high frequency (UHF) booster, and a detachable component having at least one UHF RFID module and a high frequency (HF) RFID module. In some embodiments, the detachable component is positioned in close proximity to the base component in a first configuration of the RFID switch tag such that the at least one UHF RFID module is sufficiently coupled to the UHF booster in the base component to form an UHF RFID system having a desired performance. The detachable component can also be separated from the base component to obtain a second configuration of the RFID switch tag, and the HF RFID module remains functional within the detached detachable component so that the detachable component can be used as a standalone HF RFID tag.