These tags are designed to work on metal and have a small form factor that makes them easy to deploy. They also offer impressive read ranges.

Printed antennas on flexible substrates reported in literature typically have small longest linear dimension (D/(lambda)). However, these antennas often have low to moderate gain.

Cost Effectiveness

The two main components of every RFID system are an antenna or reader and a whole lot of tags. Antennas are one-time investments but tags are an UHF RFID Tag ongoing expense so they need to be economical. UHF RFID tags tend to be cheaper than LF or HF tag solutions.

RFID tags operate in the ultra high frequency range (300 MHz to 3 GHz). These tags do not contain a battery and depend on a reader for power when coupling through radiofrequency induction or electromagnetic fields. Passive tags can transmit data to the reader for a few meters or more, depending on the tag chip sensitivity and antenna design.

Many RFID tags require printed antennas to be flexible enough for integration on non-conformal package structures, such as a pill bottle. Several printing techniques have been used for these antennas but the best approach is the use of meander monopole designs. These can be fabricated on a thin, flexible substrate.

This paper focuses on the methodical design, fabrication, and characterisation of a passive European UHF RFID tag antenna. The antenna is a 70 x 17 x 0.3 mm3 folded dipole with meandering and end loading to match a Texas Instruments UHF RFID tag chip through a T-match feeding network. Its simulated and measured performance shows good coverage of the European UHF band and its return loss is less than 10 dB.

Increased Visibility

UHF RFID Tags can be read at long ranges — allowing you to keep better tabs on all the inventory, products and assets that drive your business. UHF RFID tags can be passive or active, and a variety of shapes and materials are available to fit your specific needs and environment. Today’s Gen 2 passive UHF tags are also very affordable, making RFID a viable solution for most businesses.

In warehousing, RFID tags provide the visibility you need to process and move inventory fast and accurately. The constant, accurate location information a RFID system delivers allows you to streamline and automate end-to-end warehouse operations. This leads to greater productivity and lower costs.

For manufacturing, RFID helps reduce waste by tracking the location of materials and assemblies in real-time. This improves the efficiency of a factory and reduces production downtime and costs associated with unplanned maintenance.

Energy producers rely on the constant, accurate location of equipment and crew to optimize plant uptime and avoid costly operational interruptions. UHF RFID helps reduce the risk of smart card manufacturer loss or damage to critical equipment and personnel by providing instant and automatic location information in real-time. This eliminates wasted time and labor, cuts capital expenses by reducing the need for spares and reduces fees for lost or damaged equipment by automatically tracking it from receipt of raw materials through assembly, inspection and shipping.

Increased Efficiency

UHF RFID systems deliver improved visibility and efficiency in distribution operations. In addition to reducing human error, these tags enable faster scanning and reading of items. This enables leaner warehouse processes that result in reduced inventory and operating costs.

The UHF frequency offers long read ranges that can be achieved with handheld readers. Compared to fixed systems, handheld readers are more user friendly and easy to integrate into shift operations. They are also more durable, with ergonomic designs that ensure that they can be used even in harsh environments. They are also easier to operate, requiring users to only need to hold the device with one hand or without removing their gloves.

In manufacturing, profitability hinges on how quickly and accurately products move in, through and out of a factory. With UHF RFID, companies can track inventory at every step of the process, eliminating wasted time and resources and trimming costs in end-to-end production.

In this paper, performance optimization of passive UHF-RFID tag without size limitation is studied by means of a new antenna design based on the Meander Line Antennas (MLA). This geometry reduces electromagnetic interference and provides good values of radiation efficiency as a function of metal layer conductivity and the tag’s dimensions. This allows for the implementation of this tag in planar technology, using standard fabrication techniques such as inlay and screen printing, while maintaining high values of read range.

Increased Security

Using RFID to verify IDs and pass through security is a proven way to save time, increase efficiency, and reduce the risk of human error. But many organizations are still reluctant to adopt the technology for a variety of reasons, including the cost and initial investment required.

A UHF RFID tag consists of a microchip that stores an encoded electronic product code (EPC) and a passive antenna. The chip receives a query command from an interrogator/reader and sends a response encoded in the form of a radio frequency wave. This wave is transmitted over a wireless communication link to the interrogator/reader. The signal is then reflected off the item and back to the interrogator/reader, where the EPC code and response are decoded to retrieve information about that object.

Passive RFID tags operate on the 860-960 MHz frequency band and have a wide range of applications. The latest RFID chips, such as the Impinj and NXP UCODE DNA ICs, feature 128-bit AES encryption to prevent cloning.

To enable the use of passive UHF RFID tags in close proximity to humans, researchers have investigated the possibility of reducing the size of their antennas and improving their performance. A printed, flexible, meander monopole antenna has been designed. This antenna is able to achieve high antenna gain even with a small longest linear dimension. A bending test was conducted on the antenna and showed that it could be bent by up to 24 mm in both directions without shifting its resonance frequency out of the desired operation frequency bands.