Performance improvements of multicast RFID systems using phased array antennas and phase diversity

Ndifon, Ajeck M.; Crisp, Michael; Penty, R.V.; White, I.H.

doi:10.1109/rfid-ta.2017.8098884

Cited by 1 publication

(4 citation statements)

References 13 publications

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“…III. MODELLING AND SIMULATION Simulations are performed using the 3D model presented in [20]. The model is based on a field interaction between reader and tag antennas.…”

Section: System Descriptionmentioning

confidence: 99%

“…It is therefore capable of simulating interference patterns resulting from interactions amongst several antennas as well as simple multipath, and takes into account effects such as tag and reader antenna polarisation and alignment. More detail can be found in [20].…”

Section: System Descriptionmentioning

confidence: 99%

“…Three separate circularly polarised antennas are used as the receive antennas in both cases, to allow comparison of the downlink only. Within the inventory cycle, the relative phase of each array with respect to the other is dithered as in [6,20], and explained in Section I. The experiments matching the simulated scenarios presented above were performed.…”

Section: A Antenna Design and Manufacturementioning

confidence: 99%

“…As a result, several commercial providers have developed phased array RFID antennas with multiple and switched beam configurations [19]. Furthermore, it was shown in [20] that combining multiple phased array antennas with phase diversity has the potential to increase tag power delivery, and therefore detection rate, by multicasting the same signal over two steered beams with phase hopping between them to overcome antenna-antenna interference. It was shown that higher success rates could be achieved compared to the case of time-multiplexing the phased arrays, or multicasting without phase diversity.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced RFID tag detection accuracy using distributed antenna arrays

Ndifon

Crisp

Penty

et al. 2018

2018 IEEE International Conference on RFID (RFID)

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An Ultra High Frequency (UHF) Radio Frequency Identification (RFID) system using distributed antenna arrays for interrogating RFID tags in a highly multipath environment is demonstrated. The system makes use of phase diversity and beam steering to overcome fading. The tag detection accuracy is compared to a standard fixed antenna system, showing that the presented system is able to deliver more power to the more challenging tags, and therefore is capable of a higher tag read success rate. It is also shown that, whereas a fixed antenna is capable of scanning a single cell, the ability of a phased array to scan through 360° azimuth leads to a reduction in number of antennas required for a multicell system. The experimental results are validated using a 3D field-based propagation model, which enables visualisation of the power distribution in the field of interest, and provides insight into the improved system performance.

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“…III. MODELLING AND SIMULATION Simulations are performed using the 3D model presented in [20]. The model is based on a field interaction between reader and tag antennas.…”

Section: System Descriptionmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

Section: A Antenna Design and Manufacturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations