A reference modulated scatterer for ISO18000-6 UHF tag testing

Novotný, David; Kuester, Daniel G.; Guerrieri, Jeffrey R.

doi:10.1109/memc.2012.6347065

Cited by 3 publications

(8 citation statements)

References 4 publications

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“…This is the convention in electromagnetic compatibility (EMC) [27,28][29, p. 467] and historical work in communications [30][31][32][33][34]. It has also applied in previous publications by some authors of this work [35][36][37]. Fields are the basic quantity in Maxwell's equations, the basis of the classical electromagnetism underpinning antenna and propagation theory, RF and microwave circuits, and commercial electromagnetic simulation tools.…”

Section: A1 Definition Of Power Incident Upon Dutsmentioning

confidence: 99%

LTE impacts on GPS: final test report

Young¹,

Feldman²,

Genco³

et al. 2017

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The mission of the National Advanced Spectrum and Communications Test Network (NASCTN) is to provide, through its members, robust test processes and validated measurement data necessary to develop, evaluate and deploy spectrum sharing technologies that can increase access to the spectrum by both federal agencies and non-federal spectrum users.The U.S. Department of Commerce's National Institute of Standards and Technology (NIST) and National Telecommunications and Information Administration (NTIA) established the Center for Advanced Communications (CAC) in Boulder, Colorado, to address, among other challenges, the increasing need for spectrum sharing testing and evaluation capabilities to meet national needs. As part of CAC's mission to provide a single focal point for engaging both industry and other government agencies on advanced communication technologies, including testing, validation, and conformity assessment, NASCTN was formed under the umbrella of the CAC. NIST hosts the NASCTN capability at the Department of Commerce Boulder Laboratories in Boulder, Colorado. NASCTN is a membership organization under a charter agreement. Members• Make available, in accordance with their organization's rules policies and regulations, engineering capabilities and test facilities, with typical consideration for cost.• Coordinate their efforts to identify, develop and test spectrum sharing ideas, concepts and technology to support the goal of advancing more efficient and effective spectrum sharing.• Make available information related to spectrum sharing, considering requirements for the protection of intellectual property, national security, and other organizational controls, and, to the maximum extent possible, allow the publication of NASCTN test results.• Ensure all spectrum sharing efforts are identified to other interested members.Current charter members are:• National Telecommunications and Information Administration (NTIA)• National Institute of Standards and Technology (NIST) AcknowledgmentsThe development and execution of this test methodology and data parsing and analysis required input from multiple types of expertise. Integrating and leveraging a wide range of technical skills was critical to the overall success of the project. Team members, while responsible for specific areas in their domain of expertise, were called upon to contribute to other technical and programmatic areas as needed to ensure the overall project success.Within the technical team, Dr. Daniel G. Kuester led the RF testbed design, including the automation and calibration processes; Dr. Adam Wunderlich headed up the data analysis, investigation into measurand behaviors, and presentation of collected data; Dr. Duncan A. McGillivray led the integration of devices under test (DUTs), optimization of the test operations for efficiency, and establishment of the GPS test conditions with Carlos Ruiz of the Electronic Proving Grounds at Fort Huachuca1; John Ladbury led the RF uncertainty analysis and supported calibration of the RF signaling chain; a...

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Section: A1 Definition Of Power Incident Upon Dutsmentioning

confidence: 99%

LTE impacts on GPS: final test report

Young¹,

Feldman²,

Genco³

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Also, note that (32) is different than zero only when the tag is modulating, but does not depend on the modulation or the transmitted data. Finally, this estimation of delta RCS is different of the one defined in time in [1], [2] and [3]. The rest of this section presents the measurement of the delta RCS using the proposed method [see (32)] and compare the results to the classical methods [1]- [3].…”

Section: Measurementsmentioning

confidence: 99%

“…In practice, to successfully apply this method to our setup, the drift has firstly been estimated using a low-pass filter of cutoff frequency lower than the BLF, and then subtracted from the raw I and Q channels. On another side, method described in [3] which corresponds to the difference in magnitude between the two states, is also presented but is not compatible to the definition given by [1] and [2]. Finally, note that all these methods have been applied on the exact same temporal acquisitions.…”

Section: Measurementsmentioning

confidence: 99%

“…This method provides an high accuracy but requires a complex synchronization between the emitter and receiver since the receiver has to use the same local oscillator as the emitter. Authors in [2] and [3] provide a different method based only on the difference in distance in the complex plane between the two states of the chip. This principle leverages the phase synchronization but suffers from a lower accuracy since delta RCS is only estimated using two complex samples and not a continuous acquisition like in [1].…”

Section: Introductionmentioning

confidence: 99%

“…Based on these results, the proposed method allows to measure the delta RCS of any tag using classical laboratory instruments (i.e., a vector signal generator and a spectrum analyzer) and does not require phase synchronization between the instruments as in [1] (in practice a single trigger is used). Also the accuracy of the method is improved compared to [2] or [3] since the delta RCS is computed over the entire acquisition window of the instrument. The paper is organized as follows: Section II presents the analytical model and highlights a slight difference with the classical definition of the delta RCS introduced in [1].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Differential RCS of Modulated Tag

Barbot

Rance

Perret

2021

IEEE Trans. Antennas Propagat.

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Differential RCS characterizes the aptitude of a tag to modulate the backscattered power. This parameter is classically estimated based on the variation of the IQ channels in the time domain. This paper introduces a generalization of the RCS backscattered by a tag and a new definition of the delta RCS in the frequency domain. The analytical model is based on schochastic processes and allows to estimate the delta RCS from the power spectral density of the modulated signal backscattered by the tag. The associated measurement is compared to the classical time domain based methods. Results shows a good agreement with a difference between the different approaches less than 0.5 dB. Finally, the proposed method relies on simple synchronization between the emitter and receiver to estimate the delta RCS while maintaining the accuracy.

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How Good Is Your Tag?: RFID Backscatter Metrics and Measurements

Kuester

Popović

2013

IEEE Microwave

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A reference modulated scatterer for ISO18000-6 UHF tag testing

Cited by 3 publications

References 4 publications

LTE impacts on GPS: final test report

LTE impacts on GPS: final test report

Differential RCS of Modulated Tag

How Good Is Your Tag?: RFID Backscatter Metrics and Measurements

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