3-AXIAL POLARIZATION SPHERE RFID TAG ANTENNA CAPABLE OF THE MINIATURIZATION OF THE ANTENNA BY CHANGING A RADIATION ELEMENT INTO A MEANDER LINE

摘要

PURPOSE: A 3-axial polarization sphere RFID tag antenna is provided to optimize chip impedance through the length adjustment of a short stub, thereby manufacturing the small antenna having 3-axial polarization.;CONSTITUTION: A support body(110) has a predetermined dielectric constant. A radiation element(120) is embodied as a dipole antenna, a plane line. The radiation element is attached to the support body. Power is suddenly supplied to a RFID(Radio Frequency Identification) chip(130). The radiation element is vertically bent to each other about each polarization. A short stub(140) performs complex impedance matching with the RFID chip. In the radiation element, the current component of the same direction appears in zx, zy, and xy sides. The supporter is a sphere shape.;COPYRIGHT KIPO 2010