Detachable RFID Switch Tag for Dual-Frequency Operation
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Solution Overview
Problem
Conventional RFID tags lack flexibility to support operations in multiple frequencies, limiting their applicability to specific frequency-based applications.
Innovation Solution
A radio frequency identification (RFID) switch tag design comprising a base component with a UHF booster and a detachable component with both UHF and HF modules, allowing configuration changes to operate in UHF or HF modes, enabling dual-frequency functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional RFID tag is designed for a specific frequency, then it achieves optimized performance for that frequency, but it cannot support operations in multiple frequencies
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 both UHF and HF RFID modules. This segmentation allows the tag to be configured for different frequencies by attaching the appropriate module to the base, providing multi-frequency support without permanently increasing the complexity of each individual module.
Solution Approach 2:
The base component is designed as a universal platform that can work with different RFID modules (UHF-only or dual-frequency UHF+HF modules). The detachable component serves multiple functions by incorporating both UHF and HF capabilities, allowing a single base component to support operations across multiple frequency bands through module attachment.
2Adaptability or versatility
If an RFID tag incorporates multiple frequency modules, then it gains multi-frequency capability, but the device size and complexity increase
Solution Approach 1:
By segmenting the RFID tag into a compact base component and a detachable module, the design avoids the need for multiple complete tag units. The base component maintains a minimal size optimized for UHF operation, while the detachable module containing both UHF and HF elements is only attached when multi-frequency capability is needed, reducing the overall volume when full multi-frequency support is not required.
Solution Approach 2:
The detachable component containing both UHF and HF modules is designed to attach to the base component, creating a nested configuration where the module integrates with the base. This nesting approach allows multiple frequency capabilities to be contained within a compact form factor that attaches to rather than permanently expands the base structure.
3Adaptability or versatility
If UHF and HF modules are integrated in the same component, then both frequencies are supported, but interference between the two modules may occur
Solution Approach 1:
The UHF and HF modules are segmented into separate detachable components rather than being permanently integrated. This physical separation allows each module to operate independently with its own antenna and circuitry, minimizing electromagnetic interference between the two frequency systems while still enabling dual-frequency support when both modules are attached to the base.
Solution Approach 2:
The base component acts as an intermediary platform that manages the interaction between UHF and HF modules. The base contains the UHF booster antenna and provides a standardized interface for attaching different modules, mediating the electromagnetic fields and signal paths to reduce interference between co-located UHF and HF operating elements.
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 seamless switching between UHF and HF operations, enhancing the RFID tag's versatility for applications requiring different frequency ranges, such as ETC and NFC, by maintaining functionality in both configurations.
Implementation Method 1
an UHF booster, such as an UHF booster antenna
Implementation Method 2
a 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.