Mifare cards

RFID cards


The term Radio Frequency Identification is applied for automatically identifies an object that transmits the identification (in the kind of a unique serial number) of an object wirelessly, working with radio waves.

Radio Frequency IDentification abbreviated, as RFID is usually a Dedicated Brief Variety Communication (DSRC) technologies. It truly is extremely related to Barcode identification systems nevertheless it got a major difference. RFID doesn’t need line-of-sight access but bar code scanning it is should.

RFID technologies are grouped beneath the far more generic Automatic Identification (Auto ID) technologies. The current Identification systems usually are not adequate for these days use as their low storage capacity along with the one more reality that they can’t be reprogrammed.

A feasible resolution is placing the information on silicon chips and make contact with less transfer of information amongst the information carrying device and its reader. The energy expected to operate the data-carrying device would also be transferred from the reader by contact less technologies. These all cause the development of RFID devices.

RFID Technology AND ARCHITECTURE: In an RFID program, the RFID tag, which consists of the tagged information from the object, generates a signal containing the respective facts, which can be study by the RFID reader, which then may pass this details to a processor for processing the obtained information for that certain application.


With RFID, the electromagnetic or electrostatic coupling inside the RF (radio frequency) portion on the electromagnetic spectrum is utilized to transmit signals. An RFID method consists of an antenna and also a transceiver, which study the radio frequency and transfer the facts to a processing device (reader) and also a transponder, or RF tag, which consists of the RF circuitry and info to be transmitted. The antenna gives the implies for the integrated circuit to transmit its information and facts for the reader that converts the radio waves reflected back from the RFID tag into digital facts that could then be passed on to receivers in which it may analyze the data.

Thus, an RFID Program would following 3 elements:

RFID tag or transponder

RFID reader or transceiver

Data processing subsystem

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The transponder, or RF tag tags can be either active or passive. Whilst the active tags have on-chip energy, passive tags make use of the power induced by the magnetic field of your RFID reader. As a result passive tags are less expensive nevertheless it got a limitation that, it operate in a restricted range (RFID Frequencies: RFID systems are differentiated primarily based around the frequency range it functions. The different ranges are Low-Frequency (LF: 125 – 134.2 kHz and 140 – 148.five kHz), High-Frequency (HF: 13.56 MHz) and Ultra-High-Frequency (UHF: 850 MHz – 950 MHz and 2.4 GHz – two.five GH).

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