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

摘要

An antenna using a loop structure and a helical structure, an RFID(Radio Frequency Identification) tag and an antenna impedance matching method using the same are provided to be efficiently matched with an RF front end with high capacitive reactance. An antenna using a loop structure and a helical structure includes a radiating unit(320) and a feeding unit(310). The radiating unit(320) has a helical structure. The feeding unit(310) has a loop structure with a terminal to connect a device connected to the antenna. The feeding unit(310) is inductively coupled electromagnetically by being separated from the radiating unit(320). The feeding unit(310) has a radius greater than that of the radiating unit(320).