Measurements of RFID Tag Sensitivity in Reverberation Chamber

Rudander, Jacob; Ikram-e-Khuda,; Kildal, Per-Simon; Orlenius, Charlie

doi:10.1109/lawp.2011.2177512

Cited by 15 publications

(3 citation statements)

References 15 publications

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“…It is a modular transceiver controlled with a national instruments (NI) interface through a control unit providing a high precision synchronization. Programmable and commercial available readers can also be used for tag characterization and performance evaluation 16‐18 …”

Section: State Of the Artmentioning

confidence: 99%

Experimental platform for waveform optimization in passive UHF RFID systems

Merakeb

Ezzeddine

Huillery

et al. 2020

Int J RF Microw Comput Aided Eng

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The article presents an experimental platform, so called “RFID Waveformer,” dedicated to the study of waveform optimization in the radio frequency identification (RFID) context. It is a flexible solution that enables waveform design and their energetic performance evaluation in a ultra high frequency (UHF) RFID link following the ISO‐18000 GEN2 standard protocol. It consists of a reader emulated by a LabVIEW interface controlling radiofrequency laboratory instruments, which perform real time tag response detection. Its interconnection with MATLAB routines enables the design and the evaluation of arbitrarily shaped RFID waveforms. In this article, for illustration, three waveforms are tested with RFID Waveformer in a complex propagation environment: pulsed wave (PW) and time reversal (TR) modes compared to the traditional continuous wave (CW) mode. Experimental results show that both PW and TR modes improve the energetic efficiency of the forward link and so the RFID read range compared to CW mode. Furthermore, TR presents the optimal efficiency in complex propagation medium. The RFID Waveformer enables tag response detection in the three modes offering ease of use and repeatability of measurements. The RFID Waveformer being not limited to the scenario considered in this article, it is a versatile solution extendable to other contexts.

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Section: State Of the Artmentioning

confidence: 99%

Experimental platform for waveform optimization in passive UHF RFID systems

Merakeb

Ezzeddine

Huillery

et al. 2020

Int J RF Microw Comput Aided Eng

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show abstract

“…Therefore, designers of RFID systems have to elaborate their own know-how that could allow them to independently estimate the data needed to carry out the effective synthesis of RF devices. Determination of the RFID chip impedance Z TC as well as the atypical measuring stand for determining this quantity and the chip sensitivity P Tmin or minimum magnetic field strength H min , together with a discussion of the principles underlying operation of the RFID systems are presented in [76,87,88]. On the basis of worked out results, it is possible to determine the read range (maximal distance between centers of the tags and RWD antenna) as the main parameter of the IZ that describe efficiency of every RFID system.…”

Section: Determination Of Rfid Chip Parametersmentioning

confidence: 99%

Factors Affecting the Synthesis of Autonomous Sensors with RFID Interface

Węglarski

Jankowski-Mihułowicz

2019

Sensors

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A general view on the problem of designing atypical battery-free, autonomous semi-passive RFID transponders-sensors (autonomous sensors with RFID interfaces) is presented in this review. Although RFID devices can be created in any of the electronic technologies, the design stage must be repeated each time when the manufacturing processes are changed, and their specific conditions have to be taken into consideration when modeling new solutions. Aspects related to the factors affecting the synthesis of semi-passive RFID transponder components on the basis of which the idea of the autonomous RFID sensor was developed are reflected in the paper. Besides their general characteristics, the operation conditions of modern RFID systems and achievements in autonomous RFID sensor technology are revealed in subsequent sections—they include such issues as technological aspects of the synthesis process, designing antennas for RFID transponders, determining RFID chip and antenna parameters, creating the interrogation zone IZ, etc. It should be pointed that the universal construction of an autonomous RFID sensor, which could be use in any application of the automatic object identification system, cannot be developed according to the current state of the art. Moreover, a trial and error method is the most commonly used in the today’s process of designing new solutions, and the basic parameters are estimated on the basis of the tests and the research team experience. Therefore, it is necessary to look for new inventions and methods in order to improve implementations of RFID systems.

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“…Reverberation chambers have been used in the past for electromagnetic compatibility (EMC) tests [1,2]. Research is now moving towards use of reverberation chambers for testing wireless devices, such as cellular phones, WiFi devices, and RFID tags [3,4,5]. Researchers have also investigated the effect of the reverberation chamber environment on orthogonal frequency-division multiplexing signals [6,7] and the bit error rate of signals demodulated by test systems [8,9].…”

Section: Introductionmentioning

confidence: 99%

Using the amplitude variation of a reverberation chamber channel to predict the synchronization of a wireless digital communication test system

Tanuhardja¹,

González²,

Wang³

et al. 2015

2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)

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We discuss the use of a metric based on the amplitude variation of a channel in the signal bandwidth to predict whether or not a digital wireless communication test system receiver will be able to demodulate a test signal. This metric is compared to another method consisting of the correlation calculated across the channel. A logistic regression analysis is used to provide a normalized assessment of the effectiveness of each metric as a predictive tool. We show that both metrics provide similar predictive capabilities, with the peak-to-minimum being significantly easier to calculate.

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Measurements of RFID Tag Sensitivity in Reverberation Chamber

Cited by 15 publications

References 15 publications

Experimental platform for waveform optimization in passive UHF RFID systems

Experimental platform for waveform optimization in passive UHF RFID systems

Factors Affecting the Synthesis of Autonomous Sensors with RFID Interface

Using the amplitude variation of a reverberation chamber channel to predict the synchronization of a wireless digital communication test system

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