Beam Scanning UHF RFID Reader Antenna Design for Metal Environment Application (Invited paper)

Li, Xiuping; Zhu, Hua; Li, Quanping; Feng, Wang

doi:10.1109/soli.2018.8476783

Cited by 9 publications

(8 citation statements)

References 9 publications

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“…Reiterating this process M times, M beams can produce M beam patterns such that it achieves the maximum beam pattern at an angle of [ 22 , 24 ].

…”

Section: Beam Scanning Methods (Bsm)mentioning

confidence: 99%

“…Now, the power of the radiation beam pattern at an angle,

on the xy-plane of the ESPAR antenna can mathematically be expressed as [ 24 ]

where M(

) =

(

) −

, k =

represents as the beam width at 3 dB, and C and D are the constant terms of the antenna.…”

Section: Beam Scanning Methods (Bsm)mentioning

confidence: 99%

“…This paper presents a dense IoT approach for deploying WSN with minimum interference by designing a low-power sensor application model, i.e., ECG directional high gain ESPAR antennas. The ESPAR or ESPAR array antennas are considered one of the most advanced techniques to reduce interference and increase the capability of IoT communication channels in a massive manner because of their SBS and higher gain (11.40 dBi) [ 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

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IoT Sensor Network Using ESPAR Antenna Based on Beam Scanning Method for Direction Finding

Rahman

Ryu

2022

Sensors

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Wireless sensor networks (WSNs) systems based on Internet of Things (IoT) have developed rapidly in recent years. However, interference is a major obstacle to relatively long-distance communications in such networks. It is also very complicated and challenging to fix the exact location of tags in the IoT sensor networks. To overcome these problems, in this paper, an electronic steering parasitic array radiator (ESPAR) antenna used as a beamformer to handle the interference and extend the communication range from the sensors or tags is suggested. In addition, an efficient method, namely beam scanning (BS), is proposed to find the directions of tags. The beam scanning method (BSM) can be used for the selective beam switching (SBS) system by designing an ESPAR or array of ESPAR antennas with the help of CST studio. The antennas exhibit higher gain (8.17 dBi, 11.40 dBi) and proper radiation pattern at a particular direction. In addition, the MATLAB simulation findings indicate that the proposed BSM algorithm provides longer communication range, i.e., 25 m. In order to maximize range while avoiding interference, it is necessary to determine the direction and precise orientation of the tag in the WSN communication systems. Consequently, this work could be applied to an IoT sensor network such as an electrocardiogram system by providing better advantages such as higher localization accuracy and longer operating range.

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“…Reiterating this process M times, M beams can produce M beam patterns such that it achieves the maximum beam pattern at an angle of [ 22 , 24 ].

…”

Section: Beam Scanning Methods (Bsm)mentioning

confidence: 99%

“…Now, the power of the radiation beam pattern at an angle,

on the xy-plane of the ESPAR antenna can mathematically be expressed as [ 24 ]

where M(

) =

(

) −

, k =

represents as the beam width at 3 dB, and C and D are the constant terms of the antenna.…”

Section: Beam Scanning Methods (Bsm)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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IoT Sensor Network Using ESPAR Antenna Based on Beam Scanning Method for Direction Finding

Rahman

Ryu

2022

Sensors

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“…Recently, ultra-high-frequency (UHF) radio frequency identification (RFID) technology has drawn more attraction in supply chain management and the internet of things because of its long reading distance and low cost [1][2][3][4][5]. In many practical applications, RFID tags need to be attached to the metallic objects such as containers and metal cans.…”

Section: Introductionmentioning

confidence: 99%

UHF RFID tag antenna based on the DLS‐EBG structure for metallic objects

Gao

Zhu

et al. 2020

IET Microwaves, Antennas & Propagation

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In this study, a novel compact radio frequency identification (RFID) tag antenna with a combination of a dipole and the double‐layer symmetric electromagnetic band gap (DLS‐EBG) structure is proposed for metallic objects in ultra‐high‐frequency (UHF) band. The DLS‐EBG unit cell consists of a symmetrical double‐layer structure and offset vias for tag miniaturisation. The equivalent circuit model of the unit cell is developed to analyse reflection phase characteristics. The measurement results show that the bandwidth ranges from 876 to 992 MHz and the impedance matching of the tag remains stable as the metal plate changes. The reading distance of the tag on the metal plate is up to 12.3 m under the transmitted equivalent isotropic radiated power (EIRP) of 36 dBm. Measurement and simulation results agree well.

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“…Steering antennas are also useful for location tracking and cause less interference to adjacent systems allowing operation at a higher effective isotropic radiated power (EIRP) compared to omni-direction antennas under the Federal Communications Commission (FCC) and ETSI regulations. However, many of the previously proposed antennas are linearly polarized ( [5], [8]) and [6]- [9] only allow one dimensional (1D) beam steering. Their 3 dB AR beamwidth are narrow compared to this work as in Table I.…”

Section: Introductionmentioning

confidence: 99%

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

Chen

Yang

Ndifon

et al. 2020

IEEE J. Radio Freq. Identif.

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A novel ultra-high-frequency (UHF) RFID reader antenna with 2 dimensional (2D) beam-scanning capability and a wide 3 dB axial ratio (AR) beamwidth of over 136 • is presented. The proposed antenna consists of three concentric metal rings, each having a branch wire to stimulate circular polarization (CP) and a separate feed. The antenna is able to perform a 2D beam-scan with a relatively stable gain (9-11 dBic) from 0 • to 360 • in azimuth, and-40 • to 40 • in zenith. The minima of the antenna's AR beamwidth follows the peak gain direction, giving an equivalent 3 dB AR beamwidth of 136 • for every phi cut, wider than current state-of-the-art [1]. Moreover, the proposed antenna array presents a 50Ω impedance with no impedance matching network, and requires only two phase shifters to steer, significantly reducing the design complexity. The antenna's-10 dB return loss bandwidth is from 843 MHz to 880 MHz, covering the lower band UHF RFID frequencies in the European Telecommunications Standards Institute (ETSI) region.

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Beam Scanning UHF RFID Reader Antenna Design for Metal Environment Application (Invited paper)

Cited by 9 publications

References 9 publications

IoT Sensor Network Using ESPAR Antenna Based on Beam Scanning Method for Direction Finding

IoT Sensor Network Using ESPAR Antenna Based on Beam Scanning Method for Direction Finding

UHF RFID tag antenna based on the DLS‐EBG structure for metallic objects

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

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