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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2018-08-14
Analysis of Dual-Port Reader Antenna for UHF RFID Near-Field Applications
By
Kui Jin,

    Dr. Kui Jin

    College of Electronic and Information Engineering

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Zhiyuan Geng,

    Dr. Zhiyuan Geng

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Jingming Zheng,

    Dr. Jingming Zheng

    College of Electronic and Information Engineering

    Nanjing University of Aeronautics and Astronautics (NUAA)

    China

    Homepage

Ye Liu,

    Dr. Ye Liu

    College of Electronic and Information Engineering

    Nanjing University of Aeronautics and Astronautics (NUAA)

    China

    Homepage

Enze Zhang,

    Dr. Enze Zhang

    Nanjing University of Science and Technology

    China

    Homepage

Yang Yang,

    Dr. Yang Yang

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Xiaoxiang He

    Dr. Xiaoxiang He

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 72, 31-40, 2018
doi:10.2528/PIERM18052001 | Google Scholar

Abstract
A dual-port reader antenna based on magnetic coupling in near-field (NF) and linear polarization in far-field (FF) is proposed for UHF RFID multiservice applications. The prototype consists of four straight dipoles fed by double-side parallel stripline structure with two feed ports. The proposed antenna can operate at different modes by feeding each corresponding port. In NF mode, a strong and uniform magnetic field can be generated over the interrogation zone. In FF mode, a linearly polarized performance can be obtained. The antenna prototype is printed onto a piece of FR4 substrate with an overall size of 180 × 180 × 1.6 mm3. The measured tests on reading range are carried out, and the results exhibit 100% reading rate for near-field tags within 100 mm and reading distance of far-field tags is 120 cm. Both simulated and measured results show good capability for near- and far-field applications.
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Citation
Kui Jin, Zhiyuan Geng, Jingming Zheng, Ye Liu, Enze Zhang, Yang Yang, and Xiaoxiang He, "Analysis of Dual-Port Reader Antenna for UHF RFID Near-Field Applications," Progress In Electromagnetics Research M, Vol. 72, 31-40, 2018.
doi:10.2528/PIERM18052001
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