RFID systems
RFID systems (Radio Frequency Identification systems) are basically related to chip cards. As with chip cards, the data is stored on an electronic data carrier. In contrast to chip cards, the energy supply to the data carrier and the data exchange between the data carrier and the reader are carried out using magnetic or electromagnetic fields. Not by means of contact fields.
An RFID system usually contains two basic components:
- A transponder that is attached to the object that is to be identified.
- A reader that can read and, if necessary, write to the transponder.
RFID systems
The reader
The reader of an RFID system consists of a reading or writing unit and an antenna. An electromagnetic energy field is generated by transmitting electromagnetic waves. Radio waves are used to communicate between the reader and the transponder. Only certain frequency ranges are permitted for RFID systems. The range extends from the long-wave to the microwave range. The transponder is only activated as soon as it enters the reception range of the reader. Activation takes place via a coupling unit. This allows data to be transmitted between the transponder and the reader.
You can find more information on RFID under RFID transponders.
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