Wide Area Passive UHF RFID System Using Antenna Diversity Combined With Phase and Frequency Hopping

Sabesan, S.; Crisp, Michael; Penty, R.V.; White, I.H.

doi:10.1109/tap.2013.2290114

Cited by 28 publications

(19 citation statements)

References 12 publications

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“…In [2], a distributed antenna UHF RFID system using antenna diversity in conjunction with phase and frequency hopping was proposed for enhancing tag detection performance. Good system performance was demonstrated using less RFID readers than for a conventional RFID system.…”

Section: Introductionmentioning

confidence: 99%

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Studies of indoor wave propagation and antenna diversity in UHF RFID systems

Vieira¹,

Gomes²,

Batchelor³

et al. 2019

Anais De XXXVII Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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Analytical and experimental investigations considering indoor wave propagation and antenna diversity are presented for passive UHF RFID systems. Modelling results are reported for two-ray and three-ray reflection models, with the effect of floor and ceiling relative permittivity discussed. A novel multi-LOS multi-ray reflection model, considering transmit antenna diversity, is proposed with good results reported. From experiments, a receive diversity scheme shown the best performance in comparison with transmit diversity and no diversity cases. A promising performance improvement in the tag readability is also demonstrated (without antenna diversity) by simply placing an aluminium plate on the floor nearby a commercial tag.

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Section: Introductionmentioning

confidence: 99%

“…However, the proposed technique imposes a limit on tag read speed due to the required number of phase and frequency steps. In addition, high antenna separation is needed for the technique work well [2]. In [3], the implementation of maximal ratio combining (MRC) on a dual antenna diversity receiver platform for RFID was presented.…”

Section: Introductionmentioning

confidence: 99%

Studies of indoor wave propagation and antenna diversity in UHF RFID systems

Vieira¹,

Gomes²,

Batchelor³

et al. 2019

Anais De XXXVII Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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show abstract

“…However, it should be noted that in the UHF band systems, energy conditions are limited by European standardization: ETSI EN 302 208 -2 W ERP in the frequency band from 865.6-867.6 MHz, or American: FCC Part 15.247 (1 W of transmitter output power with maximal gain of 6 dBi) -4 W EIRP in the frequency band 902-928 MHz [1]. Increasing the size of the interrogation zone can also be obtained through the multiplication of RWD systems and their antennas [7], but this significantly increases the cost of LR systems. Considerable flexibility in shaping the interrogation zone can be obtained by using a multiplexing array antenna [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Increasing the size of the interrogation zone can also be obtained through the multiplication of RWD systems and their antennas [7], but this significantly increases the cost of LR systems. Considerable flexibility in shaping the interrogation zone can be obtained by using a multiplexing array antenna [7,8]. In this case the complicated, specific arrangement of spatially placed read/write device array antennas should always be examined [912].…”

Section: Introductionmentioning

confidence: 99%

Using the phased array antenna to increase geometric size of the interrogation zone in a UHF RFID system

Jankowski-Mihułowicz

Kawalec

Węglarski

et al. 2017

Archives of Electrical Engineering

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An attempt to increase the geometric size of the interrogation zone in UHF RFID systems with a phased array antenna is presented in this paper. The interrogation zone should be as large as possible. However, energy can be transferred to transponders only to a limited distance. The greatest flexibility in developing RFID applications and shaping the interrogation zone can be achieved using a phased array antenna. The perceived issues have been effectively dealt with and the solution has been proposed on the basis of an elaborated model. Conducted studies have been used to develop a software tool in the Mathcad environment. The research results are analyzed in detail for different system configurations and can be implemented in practical projects to be developed in cooperation with the industry.

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“…To provide space diversity against multi-path fading and to increase the reliability of receiving the communication from tags with unknown orientations, the conventional RFID reader antennas are typically separated by a spacing that is large compared with the antenna wavelength [10]. Moreover, for a long range and effectively error-free RFID identification, Sabesan et al [11] proposed the distributed antenna system using antenna diversity combined with phase and frequency hopping. To dynamically control the dead zones, the RF processing unit for various frequency and phase hopping configurations has been required.…”

Section: Introductionmentioning

confidence: 99%

Quadruple‐feed beam‐controlled antenna array for the localisations of ultra‐high‐frequency radio‐frequency identification tags

Lee

Tae

2015

IET Microwaves, Antennas & Propagation

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Item-level tagging has been required to the retail market with densely placed items as well as the production line. Owing to the multi-path fading, the blind spots where the tag is non-responsive can be created. Furthermore, in case of the indoor radio-frequency identification (RFID) localisation system, additional circuits and localisation algorithms are indispensable for accurate localisation of RFID tags. In this study, in order to solve this problem, the beam-controlled antenna array with a quadruple beamforming network which generates multiple beams is presented for ultra-highfrequency (UHF) RFID systems. The proposed quadruple-feed antenna array can cover the wide spatial coverage, and the main beam directions of the proposed array can be controlled by selecting the appropriate input port of the quadruple network. The fabricated antenna array with the quadruple-feed network operates at the 902-928 MHz band and produces scannable multiple beams for UHF RFID localisation system within the wide interrogation zone.

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Wide Area Passive UHF RFID System Using Antenna Diversity Combined With Phase and Frequency Hopping

Cited by 28 publications

References 12 publications

Studies of indoor wave propagation and antenna diversity in UHF RFID systems

Studies of indoor wave propagation and antenna diversity in UHF RFID systems

Using the phased array antenna to increase geometric size of the interrogation zone in a UHF RFID system

Quadruple‐feed beam‐controlled antenna array for the localisations of ultra‐high‐frequency radio‐frequency identification tags

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