Development of a phased array antenna for universal UHF RFID reader

Karmakar, Nemai Chandra; Zakavi, Parisa; Kumbukage, Maneesha

doi:10.1109/aps.2010.5560983

Cited by 11 publications

(2 citation statements)

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“…Several methods have been investigated regarding smart antennas both in theory and experiments [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Different kinds of smart antennas have been designed to fulfil various needs, such as in military use [10], base-station tracking [11], downlink diversity transmission [12], RFID Reader [13], wide scanning [14], fibre wireless networks [15], and so on. Reactively loaded antennas or electrically steerable passive array radiator (ESPAR) antennas have received attention in recent years [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Optimal design of smart antenna systems for handheld devices

Tong

Geyi

2016

IET Microwaves, Antennas & Propagation

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The design of smart antenna system for handheld devices has been a challenge for years. In this study, an attempt is made to try to solve this challenge by applying an optimal design method for the antenna arrays introduced previously. The method is based on the optimisation of the power transmission efficiency between two antennas. During the optimisation, the smart antenna array to be designed is used as transmitting antenna, and a testing antenna is introduced as receiving antenna, positioned in the far‐field region. The maximum (minimum) possible radiation may then be achieved in the direction of the testing antenna if the power transmission efficiency is maximised (minimised). A compact low‐profile smart antenna system has been designed using the method, which works at GSM‐900 and PCS‐1900 band and employs four identical inverted‐F antennas as radiating elements. The dimension of the whole system is 140 mm × 80 mm × 7 mm, suitable for the application in handheld devices or other customer‐premises equipment.

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Section: Introductionmentioning

confidence: 99%

Optimal design of smart antenna systems for handheld devices

Tong

Geyi

2016

IET Microwaves, Antennas & Propagation

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“…To solve these problems, antenna beamforming technologies have been applied to the recent RFID systems in the ultra‐high frequency (UHF) [18–24]. Antenna beamforming comprises using two or more antenna elements to direct electromagnetic energy to a certain region in space.…”

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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