UHF RFID Tag

UHF RFID Tag are a powerful tool that can be used to identify and track items. They are widely used in retail stores to prevent shoplifting and ensure inventory accuracy.

Printed sensors have the potential to increase the flexibility of RFID tags and make them more easily integrated with objects. This paper presents a printed UHF RFID tag with a built-in temperature sensor.

1. Long Range

UHF RFID tags are able to provide a very long read range of up to 3 kilometer (1.8 miles) for tracking and locating applications. This allows you to track assets like vehicles, personnel and containers in the field or use them in a wide variety of security applications such UHF RFID Tag as gates, walls and doors. SkyRFID offers a wide array of 433 MHz readers, tags (ATEX certified) and antennas to meet a variety of Industrial, Marine, Mining, Healthcare, Manufacturing, Gated Communities and Security needs.

The HF technology used by these tags uses magnetic flux to power and communicate with the chip inside the tag. This technology is omnidirectional, which means it radiates in all directions equally. This gives the tags a very large reading distance when matched with the right reader.

The tag range is also influenced by the impedance matching between the antenna and the IC, the RF propagation environment, and the reader sensitivity. Optimal tag range is reached when the antenna and IC impedances are conjugate matched. This can be achieved by using a series inductor on the tag.

2. High Data Capacity

Ultra high-frequency technology (UHF) RFID tags allow for large amounts of data to be stored on the device, increasing operational efficiency by providing real-time visibility into the supply chain. With this capability, manufacturers are able to gain critical insight into production operations and make more informed business decisions.

Unlike LF tags, which have no anti-collision capabilities and can only be read one at a time, UHF tags are designed with a variety of protocols that have strong anti-collision features. This allows multiple tags to be read in the same IZ and provides greater accuracy for inventory and location tracking.

Screen-printed UHF RFID antennas on flexible substrates have been demonstrated on polyimide Kapton15 and cardboard14. However, these antennas have much larger dimensions and a lower gain than the ones used in this study. The aim of this work was to design a small, flexible UHF RFID tag antenna with a lower D/(lambda) and high gain. This is achieved by using a geometry composed of nested concentric hexagonal resonators etched on an FR4 substrate. Three combinations namely zero slot, two slots, and five slots of the proposed tag’s geometry were manufactured on the FR4 substrate by using a Denford milling machine at the University of Nottingham.

3. Low Cost

UHF RFID tags are much less expensive than traditional barcodes and offer a wide range of benefits for supply chain applications, retail inventory control and driving efficiencies. RFID tag suppliers have been working to reduce the cost of the devices to drive adoption and lower the total cost of ownership.

Typical RFID tags contain an RFIC mounted on a printed antenna substrate. Antenna designs with compact dimensions and reasonable gain are important for tag insertion on small packages. This research aims to develop a new method of printing flexible antennas with high-performance characteristics. To achieve this, antennas are fabricated with several different printing techniques, characterized, and prototyped with three different geometries. To attach the RFIC to the printed antenna, silver ink is applied through a stencil.

HF RFID tags can be read by most smartphones that support the NFC UHF RFID Tag contactless standard, allowing for one-to-one coupling and a variety of marketing and interactive experiences. In addition, they are used in toll road systems for tracking vehicle data without requiring drivers to stop or slow down.

4. High Security

UHF RFID Tags offer high security capabilities that protect your data. These tags can have their EPC number locked by the chip manufacturer, meaning that cloning and counterfeiting are not possible.

To ensure the integrity of your data, the UHF RFID tag must authenticate with the reader before it can send any information to them. This is known as secure communication. The reader and tag verify each other’s identity by exchanging a secret key. This ensures that the data exchanged between the two is encrypted in real time.

Encrypted chips do more than open gates; they allow patrons to bypass lines and buy merchandise or concessions without a cashier. They also help prevent counterfeiting and fraud, ensuring that you aren’t losing money or putting your customers at risk. These features make UHF RFID an invaluable tool for venues that are concerned about security.

5. Easy Installation

UHF RFID tags can be easily mounted on products or packages using different types of adhesives. The type of surface material the tag is attached to can impact the performance of a RFID tag because the antenna is tuned to perform better on certain materials. Attaching a tag to an incompatible type of surface material can result in reduced read range or even no reading at all.

Unlike LF and HF tags, UHF tags include an internal battery that does not rely on passive backscatter to operate. Instead, they proactively beacon at regular intervals. These beacons are detected by the reader and sent to a host system for processing.

The performance of a UHF RFID Tag depends on the impedance matching between its antenna and IC (integrated circuit). A maximum value of (Zant+ZIC) is achieved when the antenna and IC impedances are conjugate matched. Using a series inductor is an effective way to achieve this. The resulting impedance matching increases (Zant+ZIC) and thus the RFID tag’s power output. This improves the tag’s ability to transmit data at longer distances.