Radio Frequency Identification (RFID)

Raycomm are a UK based, leading developer of custom software and electronic design solutions for innovative technological products and systems.

Radio-frequency identification (RFID) is an automatic identification method relying on storing and remotely retrieving data using devices called RFID tags or Transponders.
RFID tags can be applied to almost any object. They vary in the amount of data they can store and the distance away that they can be read.
Most RFID tags consist of the same basic parts.

• An integrated circuit which handles the storing and processing of data, the modulation and demodulation of the radio waves and in some cases other specialised functions.
• An Antenna for receiving and transmitting the signal.

There are also some chipless RFID tags which do not require an integrated circuit. These can easily be printed onto objects thus reducing their cost. A common application of these is in shop tags.

TAG Types

• Passive No Internal Power supply. Power derived from radio signal is just enough to power CMOS integrated circuit.
• Active These have their own internal power source and can broadcast their signal to a reader
• Semi-passive these also have a battery to power them but don’t broadcast their data. Instead it reflects back the data like a passive tag does.

Applications

Passports
Transport payments
Product Tracking
Animal Identification