Reader->

 2) Reader(Transceiver):-

                                       Basically Readers are Three types--

            1)Passive Reader Active Tag(PRAT)

            2)Active Reader Passive Tag)(ARPT)

            3)Active Reader Active Tag(ARAT)

           

A Passive Reader Active Tag (PRAT) system has a passive reader which only receives radio signals from active tags.

      How does work Tags and reader in environments:

•The reader surrounds itself with an electromagnetic field

 

                  Reader óTag Data Exchange

•The reader sends commands to the tag via pulse amplitude modulation

•The tag sends responses to the reader via back-scatter modulation.