Beam Scanning UHF RFID Reader Antenna with High Gain and Wide Axial Ratio Beamwidth

Rui Chen; Shuai Yang; Ajeck M. Ndifon; Ian H. White; Richard V. Penty; Michael Crisp

doi:10.1109/JRFID.2020.2994447

Beam Scanning UHF RFID Reader Antenna with High Gain and Wide Axial Ratio Beamwidth

Rui Chen
, Shuai Yang
, Ajeck M. Ndifon
, Ian H. White
, Richard V. Penty
, Michael Crisp

Vice Chancellor's Office

University of Cambridge

Research output: Contribution to journal › Article › peer-review

3 Citations (SciVal)

352 Downloads (Pure)

Abstract

A novel ultra-high-frequency (UHF) RFID reader antenna is proposed, designed and measured. The proposed antenna is capable of 2-dimensional (2D) beam-scanning from 0° to 360° in the azimuth plane, and 0° to 40° in the zenith plane. The minima of the antenna's axial ratio (AR) follows its gain maxima during beam-scanning, resulting in an equivalent 3 dB AR beamwidth of over 136° for every phi cut. Moreover, the antenna's AR can be easily modified without affecting other parameters. It is shown experimentally that the antenna's 2D beam-scanning ability and the improved AR performance lead to better tag-reading results, improving the percentage of missing tags by up to 21.6% compared to a standard antenna which has a degraded AR and only supports 1D beam-scanning. In addition, the antenna needs no matching network and has a -10 dB return loss bandwidth from 860 MHz to 880 MHz.

Original language	English
Article number	9097294
Pages (from-to)	468-475
Number of pages	8
Journal	IEEE Journal of Radio Frequency Identification
Volume	4
Issue number	4
Early online date	20 May 2020
DOIs	https://doi.org/10.1109/JRFID.2020.2994447
Publication status	Published - 31 Dec 2020

Bibliographical note

Funding Information:
This work was supported by the Engineering and Physical Sciences Research Council (Channel Optimised Distributed Passive Sensor Networks) under Grant EP/S-19405/1.

Funding

This work was supported by the Engineering and Physical Sciences Research Council (Channel Optimised Distributed Passive Sensor Networks) under Grant EP/S-19405/1.

Keywords

Antenna arrays
phased arrays
radio-frequency identification
UHF antennas
UHF propagation

ASJC Scopus subject areas

Computer Networks and Communications
Instrumentation

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10.1109/JRFID.2020.2994447

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Accepted author manuscript, 5.51 MB

https://www.repository.cam.ac.uk/handle/1810/305304

Cite this

@article{b60301bcdb834fba8c2dd7ae89ef59b5,

title = "Beam Scanning UHF RFID Reader Antenna with High Gain and Wide Axial Ratio Beamwidth",

abstract = "A novel ultra-high-frequency (UHF) RFID reader antenna is proposed, designed and measured. The proposed antenna is capable of 2-dimensional (2D) beam-scanning from 0° to 360° in the azimuth plane, and 0° to 40° in the zenith plane. The minima of the antenna's axial ratio (AR) follows its gain maxima during beam-scanning, resulting in an equivalent 3 dB AR beamwidth of over 136° for every phi cut. Moreover, the antenna's AR can be easily modified without affecting other parameters. It is shown experimentally that the antenna's 2D beam-scanning ability and the improved AR performance lead to better tag-reading results, improving the percentage of missing tags by up to 21.6\% compared to a standard antenna which has a degraded AR and only supports 1D beam-scanning. In addition, the antenna needs no matching network and has a -10 dB return loss bandwidth from 860 MHz to 880 MHz. ",

keywords = "Antenna arrays, phased arrays, radio-frequency identification, UHF antennas, UHF propagation",

author = "Rui Chen and Shuai Yang and Ndifon, \{Ajeck M.\} and White, \{Ian H.\} and Penty, \{Richard V.\} and Michael Crisp",

note = "Funding Information: This work was supported by the Engineering and Physical Sciences Research Council (Channel Optimised Distributed Passive Sensor Networks) under Grant EP/S-19405/1. ",

year = "2020",

month = dec,

day = "31",

doi = "10.1109/JRFID.2020.2994447",

language = "English",

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T1 - Beam Scanning UHF RFID Reader Antenna with High Gain and Wide Axial Ratio Beamwidth

AU - Chen, Rui

AU - Yang, Shuai

AU - Ndifon, Ajeck M.

AU - White, Ian H.

AU - Penty, Richard V.

AU - Crisp, Michael

N1 - Funding Information: This work was supported by the Engineering and Physical Sciences Research Council (Channel Optimised Distributed Passive Sensor Networks) under Grant EP/S-19405/1.

PY - 2020/12/31

Y1 - 2020/12/31

N2 - A novel ultra-high-frequency (UHF) RFID reader antenna is proposed, designed and measured. The proposed antenna is capable of 2-dimensional (2D) beam-scanning from 0° to 360° in the azimuth plane, and 0° to 40° in the zenith plane. The minima of the antenna's axial ratio (AR) follows its gain maxima during beam-scanning, resulting in an equivalent 3 dB AR beamwidth of over 136° for every phi cut. Moreover, the antenna's AR can be easily modified without affecting other parameters. It is shown experimentally that the antenna's 2D beam-scanning ability and the improved AR performance lead to better tag-reading results, improving the percentage of missing tags by up to 21.6% compared to a standard antenna which has a degraded AR and only supports 1D beam-scanning. In addition, the antenna needs no matching network and has a -10 dB return loss bandwidth from 860 MHz to 880 MHz.

AB - A novel ultra-high-frequency (UHF) RFID reader antenna is proposed, designed and measured. The proposed antenna is capable of 2-dimensional (2D) beam-scanning from 0° to 360° in the azimuth plane, and 0° to 40° in the zenith plane. The minima of the antenna's axial ratio (AR) follows its gain maxima during beam-scanning, resulting in an equivalent 3 dB AR beamwidth of over 136° for every phi cut. Moreover, the antenna's AR can be easily modified without affecting other parameters. It is shown experimentally that the antenna's 2D beam-scanning ability and the improved AR performance lead to better tag-reading results, improving the percentage of missing tags by up to 21.6% compared to a standard antenna which has a degraded AR and only supports 1D beam-scanning. In addition, the antenna needs no matching network and has a -10 dB return loss bandwidth from 860 MHz to 880 MHz.

KW - Antenna arrays

KW - phased arrays

KW - radio-frequency identification

KW - UHF antennas

KW - UHF propagation

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SP - 468

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JO - IEEE Journal of Radio Frequency Identification

JF - IEEE Journal of Radio Frequency Identification

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M1 - 9097294

ER -

Beam Scanning UHF RFID Reader Antenna with High Gain and Wide Axial Ratio Beamwidth

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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