RFID Tag With Tilted Antenna For Height-Adaptive Identification
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Solution Overview
Problem
RFID tags experience a sharp reduction in identification distance and performance due to height deviations between the tag attachment location and the reader antenna, leading to reduced reliability and stability in RFID systems, especially in industrial applications involving high shelves and facilities.
Innovation Solution
A radio frequency identification tag component with a metal plate and a 3D metal wire antenna structure that allows for adjustable radiation gain direction, enabling identification even when the tag is attached at varying heights or angles by tilting the peak radiation gain, and incorporating embossing/stamping for visual identification without compromising functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RFID tag is attached at a fixed height perpendicular to the surface, then the peak radiation gain is maximized in a specific direction, but the identification distance decreases sharply when the reader antenna height or tag attachment height varies
Solution Approach 1:
The patent applies the dynamics principle by making the radiation element's orientation adjustable relative to the metal plate. The radiation element can be tilted at different angles (e.g., 15°, 30°, 45°, 60°) to dynamically adapt to varying reader antenna heights and attachment locations, ensuring consistent identification performance across different scenarios.
Solution Approach 2:
The patent introduces an angular dimension by tilting the radiation element relative to the metal plate surface. Instead of having the radiation element perpendicular to the plate, it is angled in a third dimension, creating an oblique radiation pattern that extends the effective identification distance to readers at various heights and positions.
2Adaptability or versatility
If the radiation element is positioned close to the metal plate surface, then the tag structure is compact, but the radiation gain direction is limited to perpendicular orientation
Solution Approach 1:
The patent uses the dimensionality change principle by tilting the radiation element at an angle relative to the metal plate rather than positioning it perpendicular to the surface. This angular orientation in three-dimensional space allows the radiation pattern to reach readers at various heights while maintaining a compact overall tag structure.
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 enhances the readable identification distance and reliability of RFID tags by adjusting the radiation gain direction based on attachment height and angle, improving system stability and compatibility with industrial environments.
Implementation Method 1
an antenna and a circuit board electrically connecting the IC chip with the antenna
Implementation Method 2
a metal plate with an upper surface and a lower surface; the upper surface of the metal plate is at an angle to the plane in which the antenna is located
Data Source
AI summary
A radio frequency identification tag component includes a metal plate with an upper surface and a lower surface; a radiation element comprising a tag housing, the tag housing is arranged along a side of the upper surface of the metal plate, the tag housing contain therein an IC chip, an antenna and a circuit board electrically connecting the IC chip with the antenna, wherein, the antenna is made of metal, and the antenna has a first segment and a second segment parallel to the upper surface of the metal plate, there is a first spacing between the first segment and the upper surface of the metal plate, and there is a second spacing between the first segment and the second segment, and the upper surface of the metal plate is at an angle to the plane in which the antenna is located.