RADIO FREQUENCY IDENTIFICATION TAG ANTENNA USING PROXIMITY COUPLING FOR ATTACHING TO METAL

摘要

A radio frequency identification tag antenna is provided to increase the intensity of a received signal by an RFID tag by conjugating matching to impedance of the RFID chip. A dielectric layer(210) has the polyhedral shape while including a first side and a second surface parallel with a first surface. A microstrip patch(230) is formed at the part of the second side, and the resonant frequency of the antenna is determined. A microstrip line(250) is formed at the part of the second side and has a polygonal shape including a meander structure. The microstrip line is electro-magnetically combined with the microstrip patch. Short circuit pins(271,273) are formed inside the dielectric layer so that the first side and microstrip line are short-circuited.