RFID tags come in many different designs, shapes, and sizes. A tag is designed for a particular application or a set of applications. Tags may be classified under our categories, depending on how the tags obtain power, the frequency at which they operate, the protocol used, and the various functionalities implemented on the tags. Let’s discuss tag types based on their power source.
A tag requires power to process signals received from the reader and to send the data encoded signals back to the reader. Signals sent back may be reflected signals or signals generated by the tag. Depending on how tags obtain the power and how they use that power, tags are classified as: