ISOTROPIC TAG ANTENNA FOR ATTACHING TO METAL WITH PIFA STRUCTURE

摘要

PURPOSE: An isotropy tag antenna having a PIFA structure is provided to maintain a wide operation range by tuning an antenna structure regardless of the input impedance of a feeder. CONSTITUTION: An isotropy tag antenna comprises two PIFAs(Planar Inverted-F Antenna)(110), two T matching networks, and a feeder(170). Two FIFAs are printed on the antenna substrate to face each other. Two T matching networks connect two PIFAs. The feeder is formed between two T matching networks. The thickness and length of two PIFAs are controlled to reverse the directions of currents flowing in two PIFAs.