ANTENNA HAVING A LOOP STRUCTURE AND A HELICAL STRUCTURE, RFID TAG THEREOF, AND ANTENNA IMPEDANCE MATCHING METHOD THEREOF

摘要

It one antenna use, one loop structure and a helical structure, RFID (radio frequency identification) label and is usefully arranged to be with high capacitive reactance using an identical antenna impedance matching method and the front ends RF match. One antenna use, one loop structure and a helical structure include heat dissipation unit (320) and a feeding pack (310). Unit (320) are radiated with a helical structure. Feeding pack (310) has a loop structure, and a terminal is connected to the device of antenna. By being isolated with heat dissipation unit (320), feeding pack (310) is electromagnetically inductively coupled. Feeding pack (310) has a radius for being greater than the heat dissipation unit (320).