10 UHF RFID Reader .pdf
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Forms OF RFID SYSTEMS
Now that you simply know how RFID systems perform, it is time for you to go deeper in to the distinct
kinds of systems accessible. RFID systems is usually broken down by the frequency band within which
they operate: low frequency, high frequency, and ultra-high frequency. Get more information about
logistics UHF RFID Reader
There are also two broad categories of systems-passive and active RFID. Within the sections under we'll
explore the frequencies and forms of RFID systems.
Frequency refers to the size on the radio waves used to communicate in between system elements. RFID
systems throughout the globe operate in low frequency (LF), high frequency (HF), and ultra-high
frequency (UHF) bands. Radio waves behave differently at each of those frequencies and there are
benefits and disadvantages associated with using every single frequency band.
By way of example, if an RFID system operates at a reduce frequency, it includes a slower data study
rate, but improved capabilities for reading close to or on metal or liquid surfaces. If a system operates at
a larger frequency, it normally has more rapidly data transfer rates and longer study ranges, but far
more sensitivity to radio wave interference brought on by liquids and metals within the atmosphere.
Nonetheless technologies innovations in current years have made it probable to use ultra-high
frequency RFID systems about liquids and metals.
Low Frequency (LF) RFID
The LF band covers frequencies from 30 KHz to 300 KHz. Typically LF RFID systems operate at 125 KHz,
although there are some that operate at 134 KHz. This frequency band delivers a quick read range of 10
cm, and has slower study speed than the higher frequencies, but isn't very sensitive to radio wave
LF RFID applications include things like access control and livestock tracking.
Standards for LF animal-tracking systems are defined in ISO 14223, and ISO/IEC 18000-2. The LF
spectrum is not regarded a definitely international application because of slight differences in frequency
and energy levels throughout the globe.
High-Frequency (HF) RFID
The HF band ranges from 3 to 30 MHz. Most HF RFID systems operate at 13.56 MHz with study ranges in
between 10 cm and 1 m. HF systems experience moderate sensitivity to interference.
HF RFID is normally used for ticketing, payment, and data transfer applications.
There are several HF RFID standards in place, such as the ISO 15693 normal for tracking things, along
with the ECMA-340 and ISO/IEC 18092 standards for Near Field Communication (NFC), a quick range
technology that is generally used for data exchange amongst devices. Other HF requirements contain
the ISO/IEC 14443 A and ISO/IEC 14443 standards for MIFARE technology, which used in smart cards and
proximity cards, and also the JIS X 6319-4 for FeliCa, which is a smart card system normally used in
electronic money cards.
Ultra-high frequency (UHF) RFID
The UHF frequency band covers the range from 300 MHz to 3 GHz. RAIN RFID systems comply together
with the UHF Gen2 regular and make use of the 860 to 960 MHz band. When there is some variance in
frequency from region to area, RAIN RFID systems in most countries operate among 900 and 915 MHz.
The read variety of passive UHF systems may be provided that 12 m, and UHF RFID includes a more
rapidly data transfer rate than LF or HF. UHF RFID may be the most sensitive to interference, but a lot of
UHF product makers have located techniques of designing tags, antennas, and readers to keep
performance high even in challenging environments. Passive UHF tags are much easier and more
affordable to manufacture than LF and HF tags.
RAIN RFID is used within a wide variety of applications, ranging from retail inventory management, to
pharmaceutical anti-counterfeiting, to wireless device configuration. The majority of new RFID projects
are using UHF (RAIN) as opposed to LF or HF, generating RAIN the quickest developing segment on the
RFID market place.
The UHF frequency band is regulated by a single worldwide regular called the ECPglobal Gen2 (ISO
18000-63) UHF common. Impinj spearheaded development on the Gen2 common, lobbied governments
to allocate frequency spectrum and co-founded the RAIN RFID Alliance as well as Google, Intel and
Smartrac so as to promote the universal adoption of RAIN technology solutions across many unique