Meandering Bracket Amplifies RFID Antenna Gain
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Solution Overview
Problem
Industrial RFID tags have limited antenna gain and communication range, making it difficult to remotely identify and locate field devices in restricted or obstructed areas, posing safety risks to workers.
Innovation Solution
The use of brackets with meandering amplification arms that amplify the antenna gain of RFID tags, increasing their communication range by coalescing electromagnetic fields for more efficient power transmission, allowing the tags to be mounted on field devices and read from a safe distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID tags are mounted on field devices in restricted areas, then device identification and location tracking are enabled, but the limited antenna gain restricts communication range to within five feet, requiring workers to approach dangerously close
Solution Approach 1:
The bracket structure serves as an intermediary element between the RFID tag antenna and the surrounding environment. By positioning the tag on the bracket with specific geometry, the bracket acts as a reflective surface that redirects electromagnetic energy, effectively extending the communication range without requiring the tag itself to have higher gain.
Solution Approach 2:
The invention utilizes spatial arrangement and three-dimensional positioning of the RFID tag on the bracket structure. By orienting the tag at specific angles and positions relative to the bracket's reflective surfaces, the system transforms the limited omnidirectional radiation pattern into a directed beam, effectively extending range in specific dimensions while maintaining compact overall size.
2Measurement precision
If workers approach field devices within five feet to read RFID tags, then accurate identification and location data are obtained, but worker safety is compromised in restricted or obstructed areas
Solution Approach 1:
The bracket structure serves as an intermediary that enables remote communication by reflecting and redirecting electromagnetic signals. This allows RFID readers to communicate with tags from distances exceeding five feet, eliminating the need for workers to physically approach hazardous equipment while maintaining accurate identification and location data retrieval.
3Length of moving object
If the bracket structure with meandering amplification arms is used, then antenna gain is amplified and communication range is extended to thirty feet or more, but the device complexity and structural requirements increase
Solution Approach 1:
The bracket structure is designed to serve multiple functions simultaneously: it provides mechanical support for mounting the RFID tag, acts as a reflective surface to amplify antenna gain, and extends communication range through its geometric configuration. This multi-functionality reduces the need for separate amplification components, thereby managing complexity while achieving enhanced performance.
Solution Approach 2:
The meandering geometry of the bracket's amplification arms is specifically designed to resonate at the RFID operating frequency, transforming the bracket from a simple mechanical support into an active electromagnetic component. By changing the physical parameters (shape, size, orientation) of the bracket, the system achieves gain amplification without adding electronic amplification circuitry.
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 significantly increases the maximum communication range of RFID tags from five feet to thirty feet or more, enabling safe remote identification and location of field devices without direct access, enhancing worker safety and operational efficiency.
Implementation Method 1
amplify the antenna gain of RFID tags, increasing their communication range by coalescing electromagnetic fields for more efficient power transmission
Data Source
AI summary
Brackets for amplifying antenna gain associated with mountable radio frequency identification (RFID) tags are disclosed. An example apparatus includes a bracket and an RFID tag. The bracket has a base, a first meandering amplification arm connected to and extending away from the base in a first direction, and a second meandering amplification arm connected to and extending away from the base in a second direction opposite the first direction. The RFID tag is mounted to the base of the bracket. The first meandering amplification arm and the second meandering amplification arm are respectively structured to at least one of: amplify an antenna gain associated with the RFID tag; or increase a communication range associated with the RFID tag.