RFID TAG ANTENNA AT AN ULTRA HIGH FREQUENCY BAND CAPABLE OF REDUCING INTERFERENCE BETWEEN ADJACENT TAGS

摘要

PURPOSE: An RFID tag antenna is provided to reduce interference between adjacent tags by feeding a current of the same amplitude and phase to radiation devices through a feeding loop.;CONSTITUTION: A feeding loop(100) has a square shape. One side of the feeding loop is opened. A first radiation device(200) has a first dipole arm and a second dipole arm. A second radiation device(300) is faced with the first radiation device with a fixed gap, and has a third dipole arm and a fourth dipole arm. A third radiation device(400) is arranged under the second radiation device with a fixed gap, and has a fifth dipole arm and a sixth dipole arm. A fourth radiation device(500) is arranged between the first radiation device and the third radiation device, and has a seventh dipole arm and an eighth dipole arm.;COPYRIGHT KIPO 2010