RFID IC Operational Capability Removal via Electromechanical Switching
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Solution Overview
Problem
Conventional RFID tags continue to respond indefinitely, leading to reduced flexibility in adapting to different stages of their life cycle, particularly due to wireless interference from device housings, and lack mechanisms to deactivate or change functionality, posing issues with proprietary information protection and user application changes.
Innovation Solution
An electromechanical mechanism is used to alter the operational capabilities of an RFID integrated circuit on a circuit board, including grounding the RFID antenna to prevent wireless communication and adding a larger antenna for enhanced signaling, allowing for controlled deactivation or modification of RFID functionality during the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional RFID tags continue to respond indefinitely, then the RFID tag maintains continuous operational capability, but flexibility in adapting to different stages of life cycle is reduced
Solution Approach 1:
The patent implements a switchable mechanism that allows the RFID tag to dynamically change its operational state between active and inactive modes. The switch, controlled by a control circuit, enables the RFID tag to adapt its functionality based on different life cycle stages, resolving the contradiction between continuous operation and adaptability.
2Loss of information
If RFID tags operate indefinitely without deactivation mechanism, then wireless communication remains available, but proprietary information protection is compromised
Solution Approach 1:
The patent incorporates a deactivation mechanism that is prepared in advance but not activated until needed. The switch and control circuit are pre-installed in the RFID tag, allowing proprietary information to be protected by deactivating the wireless communication capability when required, thus preventing information loss while maintaining operational ease when active.
3Adaptability or versatility
If RFID tag functionality cannot be changed, then manufacturing process is simplified, but user application changes are prevented
Solution Approach 1:
The patent designs the RFID tag with a universal switchable architecture that can support multiple applications and functions. The control circuit and switch mechanism enable the same RFID tag to serve different user applications by simply changing the operational state, providing multi-functionality without requiring multiple specialized tags, thus balancing adaptability with manageable complexity.
4Object-affected harmful factors
If RFID antenna is not grounded, then wireless communication is enabled, but wireless interference from device housing occurs
Solution Approach 1:
The patent extracts or removes the harmful effect of wireless interference by grounding the RFID antenna through a switch-controlled connection. The grounding mechanism selectively connects the antenna to ground potential, effectively taking out the interference problem caused by device housing while preserving wireless communication capability when the switch is in the appropriate state.
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 ensures RFID tags remain functional or adaptable post-manufacturing, protects proprietary information, and enables switching between manufacturing and user-oriented applications, addressing the limitations of conventional RFID technology.
Implementation Method 1
grounding the RFID antenna to prevent wireless communication
Data Source
AI summary
In certain embodiments of radio frequency identification (RFID) operational capability removal, different stages of a life cycle of an RFID integrated circuit (IC) are supported. In one stage, an RFID IC is coupled to an RFID antenna and uses the RFID antenna to communicate wirelessly. In another stage, an operational capability of the RFID IC is removed by coupling a component thereto. For example, a circuit board includes an RFID IC and an RFID antenna operably coupled thereto. During a manufacturing stage of a device, the RFID IC can communicate using the RFID antenna. As part of the device assembly, a device component is mated to the circuit board. Respective electrical connection parts of the circuit board and of the device component are coupled together as part of a mating procedure. The coupling removes an operational capability of the RFID IC, such as a capability to use the RFID antenna.