Single-Fed Broadband CP Bidirectional Antenna with Double-Layer Diagonally Aligned Plates for Universal UHF-RFID Applications
Joint Authors
Akkaraekthalin, Prayoot
Luadang, Bancha
Dentri, Sitthichai
Pookkapund, Khanet
Phongcharoenpanich, Chuwong
Source
International Journal of Antennas and Propagation
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-08
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
This research proposes a single-fed broadband circularly polarized (CP) bidirectional antenna operable in 840–960 MHz frequency band for readers of universal UHF-RFID applications.
The proposed antenna is comprised of upper-layer conductor, lower-layer conductor, and wall patches.
The upper-layer conductor consists of two diagonally aligned rectangular copper plates with a feeding gap at the center, and the lower-layer conductor is of two diagonally adjoined rectangular plates.
The upper- and lower-layer conductors are adjoined with the wall patches.
The diagonal alignment technique of the upper- and lower-layer plates was used to realize circular polarization and improve 3-dB axial ratio (AR) bandwidth.
The double layers were deployed to improve impedance bandwidth (|S11| < −10 dB) and achieve bidirectional radiation pattern.
The simulated impedance bandwidth and 3-dB AR bandwidth were 772.19–1014.6 MHz (27.13%) and 675–1000 MHz (38.80%), and the corresponding measured results were 759–1011 MHz (28.47%) and 648–1110 MHz (52.55%).
The simulated LHCP/RHCP half-power beamwidth (HPBW), 3-dB AR beamwidth, and gain were 56° – 90°/54° – 92°, 60° – 104°, and 4.94 – 5.89 dBic, while the corresponding measured results were 52° – 98°/62° – 97°, 96° – 126°, and 4.28 – 5.72 dBic.
As a result, the single-fed broadband CP bidirectional antenna is applicable to universal UHF-RFID readers.
Besides, the novelty of this research lies in the use of diagonal alignment of conducting plates to achieve circular polarization and wider AR bandwidth.
American Psychological Association (APA)
Dentri, Sitthichai& Pookkapund, Khanet& Luadang, Bancha& Akkaraekthalin, Prayoot& Phongcharoenpanich, Chuwong. 2020. Single-Fed Broadband CP Bidirectional Antenna with Double-Layer Diagonally Aligned Plates for Universal UHF-RFID Applications. International Journal of Antennas and Propagation،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1168932
Modern Language Association (MLA)
Dentri, Sitthichai…[et al.]. Single-Fed Broadband CP Bidirectional Antenna with Double-Layer Diagonally Aligned Plates for Universal UHF-RFID Applications. International Journal of Antennas and Propagation No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1168932
American Medical Association (AMA)
Dentri, Sitthichai& Pookkapund, Khanet& Luadang, Bancha& Akkaraekthalin, Prayoot& Phongcharoenpanich, Chuwong. Single-Fed Broadband CP Bidirectional Antenna with Double-Layer Diagonally Aligned Plates for Universal UHF-RFID Applications. International Journal of Antennas and Propagation. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1168932
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168932