What is Ultra high Frequency?

Ultra high frequency (UHF) refers to the band of electromagnetic radiation with a radio frequency range between 300 MHz and 3 GHz (3000 MHz). This band is also known as the decimeter band, with a wavelength ranging from 1 m to 1 dm. The UHF radiations are least affected by environmental factors, that is why they are most commonly used for TV and radio transmission and channel broadcasting. They have strong directivity, but, at the same time, the receiving error increases.

 

OPPIOT explains Ultra High Frequency

Ultra high frequency is widely used for data transmission owing to its short wavelength and high frequency. Since the size of a reception antenna is directly proportional to the size of the waves, the antennas for UHF are short and stout. The higher the frequency band is, the less conspicuous the antenna size would be. The broadcast range (also called line of sight) of UHF is shorter than that of VHF, that is why boosters are used after a few hundred kilometers. UHF is used by cordless and two-way navigation, wireless local area networks, and communication, radio and security systems. UHF radars are said to be effective at tracking stealth fighters but not stealth bombers.

 

Uses of Ultra high Frequency

UHF spectrum is used for an enormous variety of purposes, including: mobile phones (PCS etc.), television broadcasters, GPS satellites and devices, satellite radio (XM and Sirius), cordless phones, wireless networking, ham radio operators, Bluetooth devices and some RFID chips.

 

Why UHF anti-metal tag?

Mounting or embedding RFID tags on metal is a tricky proposition for the uninformed, and the informed for that matter. Metal surfaces reflect energy emitted from RFID readers and create interference for RFID tag antennas, which means the tag isn’t able to receive power and transmit information; however, specific RFID tags will work around metal surfaces. RFID companies have patented technology that allows RFID to work when attached to metal surfaces and even embedded within metal products. As long as you choose the correct RFID equipment for your situation and application, you won’t need to worry about interference from metal.

 

What industries are using UHF anti-metal tag?

RFID on metal tags are perfect for asset and tool tracking in medical devices for healthcare, laptops & servers in IT (information technology), industrial manufacturing, oil & gas pipelines, vehicle tracking identification, and many other industry verticals. With the recent developments in RFID technology, the possible applications of metal mount RFID tags are expansive in scope.

 

OPPIOT RFID Tags Beat the Heat!

Need to track assets or machines exposed to extreme heat, high pressure or corrosive chemicals? OPPIOT, and only OPPIOT, has the perfect tag for you.

 

Many industries process assets, products or materials at elevated temperatures using carriers or containers for transportation purposes. Frequently being able to reliably and uniquely identify and track the asset or container is highly advantageous, generating efficiency and compliance benefits.

 

OPPIOT found the marketplace was in great need of a tag that could survive repeated exposures in high temperature settings such as automotive paint booths, medical autoclave sterilization and manufacturing operations. The only available tags on the market were, and continue to be, too large and bulky for most use cases, too expensive for large deployments and generally unreliable with an inconsistent resistance to high heat.

 

OPPIOT provides a complete family of tags designed specifically for high temperature environments reaching 235°C. These products address the critical needs of customers with their combination of a small form factor, read range up to 4m and high temperature survivability – all at a very competitive price point.

Mounting Methods of PCB Metal Tags

Binding mode
Bind the PCB tag with two pieces of string around the object, in this way the tag will be fixed secure, not easy to fall off, moreover, not need to damage the object; thus the way suits for outdoor use and those larger size tags only.
Screw Fixation
Fix the PCB tag onto an object with screws, which makes the tag firm, not easy to fall off, while it needs to punch the object somewhere; which fits for those tags with holes and to be used outdoors.
Adhesive Taping
Stick the PCB tag onto the surface of an object with strong adhesive such as 3M 300LSE, the adhesive has very good viscosity, thus suitable for indoor mounting.
Being Embedded
The tags of small size such as the Atom series by us can be embedded into some object and covered by glue as shown below, which is ideal to be hidden under the object’s surface so as to avoid being destroyed, particularly suitable for small size tag.

Quad-flat no-leads (QFN)

"Flat no-leads packages such as quad-flat no-leads (QFN) and dual-flat no-leads (DFN) physically and electrically connect integrated circuits to printed circuit boards. Flat no-leads, also known as micro leadframe (MLF) and SON (small-outline no leads), is a surface-mount technology, one of several package technologies that connect ICs to the surfaces of PCBs without through-holes. Flat no-lead is a near chip scale plastic encapsulated package made with a planar copper lead frame substrate. Perimeter lands on the package bottom provide electrical connections to the PCB. Flat no-lead packages include an exposed thermal pad to improve heat transfer out of the IC (into the PCB). Heat transfer can be further facilitated by metal vias in the thermal pad. The QFN package is similar to the quad-flat package, and a ball grid array.

 

QFN Technology in RFID Solutions:

Normally our RFID tag is directly bound to the antenna by wafer. As in our UHF Metal tags, we can use QFN technology to bind to the antenna, which is mainly used to resist high temperature in the special occasions where high performance is required to the tags.

The Difference Between PCB(FR4) Tags And Ceramic Tags

Item: FR4 UHF tag Ceramic UHF tag
Material: PCB（FR4） Ceramic
Usage: UHF tag on metal UHF tag on metal
Function: Good Very Good
Cost: Low Very High
Storage: Easy to store, its function not easy to decay with time going Breakable, its function will decay with time going

RFID Technology in Tool Management

"In some large repair shops, machinery companies, it’s a cumbersome and time-consuming job to look for production tools or make an inventory due to the large number of tools. Moreover, the tools are very easy to lose because of the low degree of automation and lack of human management.

 

RFID technology implements system of intelligent management on tools. The core technology of RFID is the achievement of function to collect data automatically, combining database with software management system to achieve automated management tools so as to improve effectively production efficiency and reduce the labor intensity of managers.

We embed in each tool the OPP5010 UHF tag, with which connect the system database, manage these tools through the RFID handheld readers.
The tags’ performance is superior. When the tag faces downward, being covered by the tool, it can still be read by a RFID reader with read range of about 50 CM.

Features of OPP5010 UHF Tag:

  1. Small size, thin thickness;
  2. Embeddable into assets, stable and reliable in performance;
  3. Resist high temperature, vibration and impact;
  4. Meet the International Standard of the EPC Global Gen2 and ISO 18000-6C;
  5. Memory: EPC 96bits (Up to 480bits), USER 512bits, TID64bits

Applications:

  1. Tool management and tracking;
  2. IT server management;
  3. Management on military assets or weapons.

In addition, we have Atom series UHF tag, which is very small in size, very suitable for management of embedded tag.

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