A Broadband Near-Field UHF RFID Reader Antenna with Flexible Substrate Material

2019 ◽  
Author(s):  
Xiangyu Qian ◽  
Ying Dong ◽  
Mingqian Jia ◽  
Wenxiu Hu ◽  
Xiaoxiang He ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Near Field ◽  
Substrate Material ◽  
Uhf Rfid ◽  
Rfid Reader ◽  
Reader Antenna

A Meander Line UHF RFID Reader Antenna for Near-field Applications

2017 ◽  
Vol 65 (1) ◽  
pp. 82-91 ◽  
Author(s):  
Yuan Yao ◽  
Caixia Cui ◽  
Junsheng Yu ◽  
Xiaodong Chen
Keyword(s):  
Near Field ◽  
Uhf Rfid ◽  
Rfid Reader ◽  
Reader Antenna ◽  
Meander Line

scholarly journals Study on the Optically Transparent Near-Field and Far-Field RFID Reader Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Yuan Yao ◽  
Junsheng Yu ◽  
Xiaodong Chen
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Near Field ◽  
Dipole Source ◽  
Far Field ◽  
Uhf Rfid ◽  
Rfid Reader ◽  
Measurement Results ◽  
Optically Transparent ◽  
Reader Antenna

A study on the optically transparent RFID reader antenna which can operate in both near-field and far-field is proposed in this paper. The antenna with a dimension of 45 mm × 45 mm is fabricated using Indium tin oxide film and can operate from 915 to 935 MHz covering the China UHF RFID band. The strong and uniform magnetic field is excited by magnetic dipole source. Both simulation and measurement results are shown to illustrate the performance of the proposed antenna. The measured reading distances are up to 40 mm and 100 mm for near-field and far-field applications, respectively.

A Broadband Near-Field UHF RFID Reader Antenna With Low Far-Field Gain

2017 ◽  
Vol 65 (9) ◽  
pp. 4869-4874 ◽  
Author(s):  
Yuan Yao ◽  
Yishan Liang ◽  
Junsheng Yu ◽  
Xiaodong Chen
Keyword(s):  
Near Field ◽  
Far Field ◽  
Uhf Rfid ◽  
Rfid Reader ◽  
Reader Antenna

scholarly journals Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF-RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Chitra Varadhan ◽  
S. Arulselvi ◽  
Fekadu Ashine Chamatu
Keyword(s):  
Near Field ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Uhf Rfid ◽  
Electric Conductor ◽  
Rfid Reader ◽  
Dielectric Constant And Loss ◽  
Radiating Element ◽  
Item Level ◽  
Reader Antenna

The proposed RFID reader antenna progressed with perfect electric conductor (PEC) as the radiating element and FR 4 as the substrate to achieve circular polarization, enhancement in bandwidth, and read range. The design presents a CPW feed RFID antenna for near-field reading applications, between the range of 903 MHz to 929 MHz. The operating frequency of the proposed design is 900 MHz, axial ratio of the model is less than 3 dB, impedance bandwidth is 256 MHz, and axial bandwidth is 36 MHz, proving to be adequate for near-field RFID reader applications such as item-level tagging and smart shelf. The proposed antenna model is realized with fractal structure to achieve miniaturization. The developed antenna is optimized using EM software for numerical analysis. The designed antenna is fabricated, and the prototype is characterized in terms of dielectric constant and loss tangent. The obtained results indicate high correlation with simulation results.

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