Directional UHF near-field RFID reader antenna with an improved magnetic field distribution

2016 ◽  
Author(s):  
Yunjia Zeng ◽  
Xianming Qing ◽  
Zhi Ning Chen ◽  
Yunjia Zeng ◽  
Jian-Ming Jin
Keyword(s):  
Magnetic Field ◽  
Field Distribution ◽  
Near Field ◽  
Magnetic Field Distribution ◽  
Rfid Reader ◽  
Reader Antenna

scholarly journals Dual-Band RFID Antenna for 0.92 GHz Near-Field and 2.45 GHz Far-Field Applications

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Zijian Xing ◽  
Kun Wei ◽  
Ling Wang ◽  
Jianying Li
Keyword(s):  
Magnetic Field ◽  
Circular Polarization ◽  
Near Field ◽  
Dual Band ◽  
Far Field ◽  
Rfid Systems ◽  
Rfid Reader ◽  
Reader Antenna ◽  
Operation Frequency ◽  
Reader System

A novel antenna used in the near field of a 0.92 GHz and the far field of a 2.45 GHz RFID reader system is investigated. The new antenna achieves strong magnetic field distribution over 0.92 GHz with good performance of detecting tags when applied in FCC RFID systems, as well as a good performance of circular polarization at 2.45 GHz. Furthermore, the investigation shows the operation principle by circuit models and the advantages of the structure in terms of the operation frequency and field performances. The advantages of these two bands could be achieved by this novel RFID reader antenna.

Magnetic Field Distribution in Aperture of TEM Horn Antenna for Close Proximity RF Immunity Test by Impulsive Excitation Wave

2020 ◽  
Vol 140 (12) ◽  
pp. 601-602
Author(s):  
Gen Kawakami ◽  
Ken Kawamata ◽  
Shinobu Ishigami ◽  
Takeshi Ishida ◽  
Katsushige Harima ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Distribution ◽  
Horn Antenna ◽  
Magnetic Field Distribution ◽  
Excitation Wave ◽  
Impulsive Excitation ◽  
Close Proximity ◽  
Tem Horn
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