Etched RFID Antenna on PCB for Space Saving and Interference Reduction
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Solution Overview
Problem
Conventional RFID antennas occupy significant space and interfere with other electronic components, such as Bluetooth antennas, while also having reduced radiant intensity, requiring physical contact for data reading.
Innovation Solution
A RFID antenna etched on a printed circuit board with a specific radiator configuration, including strip-shaped radiating portions and connecting portions, allows for efficient space usage and avoids interference with Bluetooth antennas, maintaining strong radiant intensity for non-contact data reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional RFID antenna is mounted inside the product, then the RFID function is achieved, but it occupies bigger space and interferes with other electronic components
Solution Approach 1:
The RFID antenna is integrated directly into the printed circuit board by etching the radiator pattern on the PCB surface, merging the antenna structure with the existing board rather than mounting it as a separate component. This eliminates additional space requirements and potential interference with other electronic components.
Solution Approach 2:
The printed circuit board serves dual functions: it provides the structural platform for electronic components and simultaneously acts as the RFID antenna through its etched radiator pattern. This multi-functionality reduces the overall component count and space occupation in the product.
2Reliability
If a conventional RFID antenna is mounted inside the product, then the RFID function is achieved, but the radiant intensity becomes weaker
Solution Approach 1:
The radiator pattern is designed with optimized geometric parameters including extended strip shapes, specific connecting portions, and adjusted dimensions to enhance the radiant intensity. By carefully controlling the width, length, and configuration of the etched patterns, the antenna achieves stronger radiation capability while maintaining the integrated PCB structure.
3Area of stationary object
If the RFID antenna radiant intensity is weak, then space is saved, but the reader needs to touch the tag for reading information
Solution Approach 1:
The radiator pattern incorporates optimized dimensional parameters and geometric configurations that enhance the radiant intensity to sufficient levels. This enables the RFID system to operate in contactless mode, improving ease of operation while the integrated PCB design maintains space efficiency.
4Reliability
If the RFID antenna is disposed away from the Bluetooth antenna, then interference is avoided, but more space is required
Solution Approach 1:
Both RFID and Bluetooth antenna functions are integrated into the same printed circuit board through etched radiator patterns. The board serves as a common platform that accommodates both antenna systems, eliminating the need for separate mounting structures and reducing overall space requirements while maintaining proper separation between the different antenna patterns to avoid interference.
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 effectively saves internal space, prevents interference between antennas, and ensures strong enough radiant intensity for non-contact data reading, enabling accurate identification of authentic products without compromising other electronic components.
Implementation Method 1
a RFID antenna transmitting the radio frequency signals between the tag and the reader
Data Source
AI summary
A RFID antenna etched on a printed circuit board defined a first edge and a second edge includes a first antenna radiator, a second antenna radiator and a tag chip. The first antenna radiator located at the second edge has a first radiating portion. A first connecting portion bends outwards from an end of the first radiating portion. A second radiating portion extends from an end of the first connecting portion. A third radiating portion bends inwards from an end of the second radiating portion. The second antenna radiator has a fourth radiating portion extended along the first edge. A second connecting portion bends outwards and towards the first radiating portion from an end of the fourth radiating portion. A fifth radiating portion extends along the second edge from an end of the second connecting portion. The tag chip locates between the third radiating portion and the fifth radiating portion.