A Compact Slot-Based Bi-Directional UHF RFID Reader Antenna for Far-Field Applications

被引：2
|
作者：
Birwal, Amit [1 ]
Shakya, Akash [1 ]
Kashyap, Shalini [1 ]
Patel, Kamlesh [1 ]
机构：
[1] Univ Delhi South Campus, Dept Elect Sci, New Delhi 110021, India
来源：
IEEE JOURNAL OF RADIO FREQUENCY IDENTIFICATION | 2024年 / 8卷
关键词：
Radiofrequency identification; Antennas; Slot antennas; UHF antennas; Microstrip antennas; Bandwidth; Antenna measurements; Axial ratio (AR); circular polarization (CP); RFID; reader antenna; and return loss; CIRCULARLY-POLARIZED ANTENNA; DIPOLES; ARRAY;
D O I：
10.1109/JRFID.2024.3457691
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This research introduces a novel circularly polarized compact antenna designed for universal ultrahigh-frequency (UHF) radio-frequency identification (RFID) handheld readers for Bi-directional RFID Far-field Applications. The antenna features a microstrip feed positioned at the center opposite a slot-based square ground. The ground plane is perturbed to include a thin horizontal and vertical stub on the left side, along with a thick rectangular slot at the right side of the square ground plane to achieve circular polarization. The simulated antenna provides a 3-dB axial ratio bandwidth (ARBW) of 42 MHz (831-873 MHz), a 10 dB impedance bandwidth of 15% (814-945 MHz), and a peak gain of 5.0 dBi. The antenna is fabricated on both layers of an affordable FR4 substrate, measuring 81 x 1.6 mm(3) and its measurement results are in close agreement with simulated. The application of this antenna is made with a commercial UHF RFID reader module. The obtained read range and field of view confirm that this proposed antenna is a promising option for compact universal UHF RFID handheld reader applications and other Internet of Things (IoT) based applications.
引用
收藏
页码：761 / 769
页数：9
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