Dual-Band Shared-Aperture UHF/UWB RFID Reader Antenna of Circular Polarization

2018 ◽  
Vol 66 (8) ◽  
pp. 3886-3893 ◽  
Author(s):  
Jun Zhang ◽  
Zhongxiang Shen
2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Zijian Xing ◽  
Kun Wei ◽  
Ling Wang ◽  
Jianying Li

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.


IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 177832-177843 ◽  
Author(s):  
Adisak Romputtal ◽  
Chuwong Phongcharoenpanich
Keyword(s):  

Author(s):  
Wahiba Belgacem ◽  
Miloud Bousahla ◽  
Sidi Mohammed Meriah

This paper presents a new design of dual band RFID reader antenna for ISM-band industrial science and medical applications at 2.4 GHz and 5.8 GHz. Theantenna is designed and physically built using FR4 substrate and taking a 1.5 thickness, 4.3 relative permittivity and 0.025 loss tangents. Different slots havebeen introduced to reduce the antenna dimensions and to achieve the dual bandfor microwave ISM band application. The dimension of the proposed antenna is 34 × 34 × 1.5 mm3, which it could be easily integrated into RFID readers.Numerical simulations have been performed usingcomputer simulationtechnology (CST) Microwave Studio software. A parametric study wasinvestigated in order to show the effect of slots variation and to obtain the desiredfunctional characteristics. Experimental results show a good agreement withresults obtained by simulations. A satisfactorily omnidirectional for the radiationpatterns across the antenna operation bands was obtained.


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