Introduction to On-Metal RFID Technology
RFID technology is widely used for asset tracking and identification; however, metal surfaces can significantly interfere with radio frequency signals, resulting in poor performance or complete signal loss.
To address this challenge, PCB-based on-metal RFID tags (also known as anti-metal RFID tags) are specifically engineered to deliver stable and reliable performance when mounted directly on metal surfaces.
What is a PCB RFID Tag?
A PCB RFID tag is a type of rugged RFID tag that uses a printed circuit board (PCB) as its base material instead of traditional flexible substrates such as PET or paper.
The antenna is precisely etched onto the PCB copper layer, and the structure typically includes:
A dedicated ground plane to isolate metal interference
A dielectric layer for impedance control
A high-performance RFID chip bonded onto the antenna
Protective encapsulation (e.g., epoxy resin or industrial coating)
This engineered structure ensures excellent RF stability and durability, even in harsh industrial environments.
Custom Sizes to Fit Any Application
One of the key advantages of PCB-based RFID tags is their flexible size customization.
Ultra-small size: 3 × 7 × 3 mm, but not the smallest.
Standard industrial size: 95 × 25 mm
Larger or special dimensions: Fully customizable
The size of the tag can be optimized based on: Required reading distance, Installation space constraints, Mounting method and environment
This makes PCB RFID tags suitable for both compact equipment and large industrial assets.
The advantage PCB On-Metal RFID Tags
1. Excellent Performance on Metal Surfaces
Designed with anti-metal structures, these tags eliminate signal interference and ensure stable reading performance directly on metal.
2. High Durability for Harsh Environments
PCB RFID tags are built to withstand:
High temperatures
High humidity
Dust and chemicals
Mechanical impact
3. Long Read Range and Reliable Data Transmission
Optimized antenna design ensures consistent performance and accurate data capture over longer distances.
4. Long Service Life
Compared with standard RFID labels, PCB tags offer extended lifespan, reducing replacement and maintenance costs.
Typical Applications of Anti-Metal RFID Tags
1. Warehouse Metal Shelf Management
In logistics and warehousing environments, metal racks often interfere with traditional RFID tags. PCB on-metal RFID tags enable accurate inventory tracking and real-time visibility.
2. Equipment Management in High Temperature and Humidity Environments
Ideal for industries such as manufacturing, energy, and chemical processing where extreme environmental conditions are common.
3. Power and Network Equipment Inspection
Widely used in power grids and telecom infrastructure for:
Asset identification
Maintenance tracking
Inspection management
4. Industrial Production Process Management
Applied in factory environments to track:
Work-in-progress (WIP)
Tools and fixtures
Production flow
Improves operational efficiency and traceability.
Why Choose PCB-Based RFID Tags for Metal Assets?
PCB-based on-metal RFID tags combine mechanical strength, environmental resistance, and RF stability, making them the preferred solution for demanding applications involving metal surfaces.
Whether you need miniature tags for compact devices or larger tags for long-range tracking, these tags can be fully customized to meet your project requirements.