Rfid tag antenna help

Hi everyone, . I am studying at Morocco, I would like to studying more about antenna in this field, so if any one in this area, the same me, could you give me informations and documents only about antenna . Thank you so much

ADVANCED RADIO FREQUENCY IDENTIFICATION DESIGN AND APPLICATIONS by Preradović is a good book. If you need the basics, I'd recommend ANTENNA THEORY, Balanis.