TY - JOUR
T1 - Design of Electrically Large UHF RFID Near-Field Bidirectional Antenna With AMC-Based Unidirectional Improvement
AU - Wang, Xiaoting
AU - Xing, Zijian
AU - Guo, Congyi
AU - Li, Jianying
AU - Luo, Dingyi
AU - Sim, Chow Yen Desmond
N1 - Publisher Copyright:
© 2002-2011 IEEE.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - Two novel multisegment loops coupled ultrahigh-frequency (UHF) radio frequency identification near-field (NF) antenna with a uniform and strong magnetic field distribution over an electrically large interrogation zone are designed. Each proposed antenna is composed of eight loops, and the current distribution along the loop is kept in-phase using a segmented line. To further achieve a more uniform magnetic field, the last four loops of the two proposed antennas (ANT 1 and ANT 2) are loaded with parasitic structures. Here, a 100% detection rate is achieved by ANT 1 within an interrogation area of 370×560×105 mm3 for the bidirectional operation setup. As for ANT2, it is backed by an artificial magnetic conductor to enhance the magnetic field strength and reduce the profile with respect to a configuration with a PEC reflector plane, and it has yielded a 100% detection rate within the interrogation area of 370×560×185 mm3 for the unidirectional operation setup. The proposed ANT2 can cover the UHF band of China, the Federal Communications Commission band of North America, and European Telecommunication Standards Institute band of Europe.
AB - Two novel multisegment loops coupled ultrahigh-frequency (UHF) radio frequency identification near-field (NF) antenna with a uniform and strong magnetic field distribution over an electrically large interrogation zone are designed. Each proposed antenna is composed of eight loops, and the current distribution along the loop is kept in-phase using a segmented line. To further achieve a more uniform magnetic field, the last four loops of the two proposed antennas (ANT 1 and ANT 2) are loaded with parasitic structures. Here, a 100% detection rate is achieved by ANT 1 within an interrogation area of 370×560×105 mm3 for the bidirectional operation setup. As for ANT2, it is backed by an artificial magnetic conductor to enhance the magnetic field strength and reduce the profile with respect to a configuration with a PEC reflector plane, and it has yielded a 100% detection rate within the interrogation area of 370×560×185 mm3 for the unidirectional operation setup. The proposed ANT2 can cover the UHF band of China, the Federal Communications Commission band of North America, and European Telecommunication Standards Institute band of Europe.
KW - Artificial magnetic conductor (AMC)
KW - multi segment loops coupled
KW - near-field (NF) antenna
KW - radio frequency identification (RFID)
KW - ultrahigh-frequency (UHF)
UR - https://www.scopus.com/pages/publications/85134312650
U2 - 10.1109/LAWP.2022.3189740
DO - 10.1109/LAWP.2022.3189740
M3 - 文章
AN - SCOPUS:85134312650
SN - 1536-1225
VL - 21
SP - 2045
EP - 2049
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 10
ER -