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3ALogics RFID Reader Devices
| 3ALogics designs and
manufactures highly integrated multi-protocol reader ICs for contactless
communication at 13.56MHz.
RFID Technology Radio frequency
identification, or RFID, is a generic term for technologies that use radio
waves to automatically identify people or objects. There are several methods of
identification, but the most common is to store a serial number that identifies
a person or object, and perhaps other information, on a microchip that is
attached to an antenna (the chip and the antenna together are called an RFID
transponder or an RFID tag). The antenna enables the chip to transmit the
identification information to a reader. The reader converts the radio waves
reflected back from the RFID tag into digital information that can then be
passed on to computers that can make use of it.
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3ALogics RFID
Brochure
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Tag A microchip attached to an
antenna that is packaged in a way that it can be applied to an object. The tag
picks up signals from and sends signals to a reader. The tag contains a unique
serial number, but may have other information, such as a customers' account
number. Tags come in many forms, such as smart labels that can have a barcode
printed on it, or the tag can simply be mounted inside a carton or embedded in
plastic. RFID tags can be active, passive or semi-passive.
Reader A device used to communicate
with RFID tags. The reader has one or more antennas, which emit radio waves and
receive signals back from the tag. The RF energy from the reader antenna is
"harvested" by the antenna in the tag and is used to power up the microchip,
which then changes the electrical load on the antenna to reflect back its own
signals.
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