A study of capacity change antenna for RFID tag depending on ground plane

This paper presents characteristic of antenna for radio frequency identification (RFID) tag with various backside plane. It is assumed that the tag antenna is mounted on materials, i.e., conductors, wood, dielectrics, etc. Characteristics of a printed dipole antenna and a loop antenna with parasitic element are measured. The radiation pattern of antenna is affected by backside plane of metal or magnetic materials.