Performance Analysis of Short Range UHF Propagation as Applicable to Passive RFID

Banerjee, Srutarshi; Jesme, R.; Sainati, Robert

doi:10.1109/rfid.2007.346146

Cited by 28 publications

(26 citation statements)

References 7 publications

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“…With this simple model it is only possible to define a maximum tag read distance for a given RFID system that depends on the sensitivity of the tag. 4 A model for the path loss in multipath environments is given in [27], that takes the LOS 5 path and the ground reflection into account. For the ground reflection, a reflection coefficient of À1 is assumed.…”

Section: Related Workmentioning

confidence: 99%

“…Simplified multipath channel models that can be found in literature (see e.g. [5,21,27,30]) are not able to predict these zones with high reliability, especially in environments that are characterized by strong multipath.…”

Section: Introductionmentioning

confidence: 99%

“…Our multipath channel model equations and the implemented simulation environment are presented in Sect. 4. Measurements of the tag readability in a real-world UHF RFID system and the simulation results using the improved model are compared in Sect.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling of the Passive UHF RFID Multipath Channel for Tag Read Region Estimation

Cremer

Dettmar

Kronberger

et al. 2015

Int J Wireless Inf Networks

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The estimation of tag read and no-read zones is the most important preliminary planning step in radio-frequency identification (RFID) system installations. Today, in the ultra-high frequency band (UHF: 860-960 MHz), this estimation is based on either a free-space or a simplified multipath channel model for the signal propagation in the wireless link between the interrogator and the tag. Using measurements in a standard multipath indoor environment, this paper proves that recent approaches are not able to estimate tag read regions in a given passive UHF RFID system setup with high reliability. A modified multipath channel model is presented, that considers environmental and setup specific properties as well as an arbitrary number of signal paths to achieve a more accurate estimation. It includes the orientation of the tag antenna and the interrogator antenna, their polarizations and their threedimensional gain patterns, as well as complex reflection coefficients for the reflected signal paths. The presented model equations are ready to use and are implemented into a flexible, easy-to-use, and easy-to-setup simulation environment with low computing times. It predicts the tag read regions separately for the downlink and the uplink and then combines the results for an overall estimation. The comparison of read region simulations and tag readability measurements shows that the our model delivers a 87.2 % reliability in the prediction of the tag read regions. The results of the estimation can be used to optimize RFID system setups in a way that read regions are maximized.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of the Passive UHF RFID Multipath Channel for Tag Read Region Estimation

Cremer

Dettmar

Kronberger

et al. 2015

Int J Wireless Inf Networks

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show abstract

“…There are several systems about the design of UHF RFID reader [4][5][6][7][8][9][10][11][18][19][20][21][22][23]. Some designs use microcontroller unit or DSP chip as main controller.…”

Section: Protocolmentioning

confidence: 99%

Design And Realization of a UHF RFID Interrogator

Sun

2013

International Journal on Smart Sensing and Intelligent Systems

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“…The power P b that is backscattered by the tag antenna depends on the module σ of its radar cross-section (RCS). In this paper, we'll assume for simplicity there is no multipath effect [2], [7], [8]. Assuming that the Tx, tag, and Rx antennas are perfectly aligned and that there are no polarization losses, we get…”

Section: Read Range Limitation Due To Tx/rx Couplingmentioning

confidence: 99%

Read range limitation in IF-based far-field RFID using ASK backscatter modulation

Pillin

Dehollain

Declercq

2009

2009 Ph.D. Research in Microelectronics and Electronics

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Abstract-A model is proposed to describe the fundamental read range limitation due to the local oscillator phase noise in the reader, in IF-based, far-field RFID systems using amplitude-shift keying backscatter modulation. The relation between the system parameters (such as the data transfer rate) and the read range is discussed. The model is validated by measurements done on two different laboratory tag-reader systems.

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Performance Analysis of Short Range UHF Propagation as Applicable to Passive RFID

Cited by 28 publications

References 7 publications

Modeling of the Passive UHF RFID Multipath Channel for Tag Read Region Estimation

Modeling of the Passive UHF RFID Multipath Channel for Tag Read Region Estimation

Design And Realization of a UHF RFID Interrogator

Read range limitation in IF-based far-field RFID using ASK backscatter modulation

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