Design of a broadband multiprobe reflectometer

Madonna, G.; Ferrero, A.; Pirola, Marco

doi:10.1109/19.769672

Cited by 14 publications

(4 citation statements)

References 12 publications

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“…Starting from these three possible conditions, we chose five loads to optimize the accuracy of the sensing-board algorithm in the area defined by the impedances reported in Figure 9 over the entire bandwidth. In addition, we took into account the condition number of the matrix C [35] to reduce the sensitivity of the calibration algorithm to measurement uncertainty. The selected loads are reported in Table 1, for which the condition number results sufficiently small (~5).…”

Section: Matrixmentioning

confidence: 99%

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

et al. 2019

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The upcoming technologies related to Internet of Things will be characterized by challenging requirements oriented toward the most efficient exploitation of the energy in electronic systems. The use of wireless communications in these devices makes this aspect particularly important, since the performance of radio transceivers is strongly dependent on the environmental conditions affecting the antenna electrical characteristics. The use of circuits capable of adapting themselves to the actual state of the environment can be a valuable solution, provided that the implemented sensing features have negligible impact on the overall performance and cost of the system. In this work, we present the design and verification of an innovative ultra-wideband sensing board to detect real-time variations of the antenna impedance in transmitters oriented to Internet of Things applications. The proposed sensing board was widely validated by means of small- and large-signal measurements carried out at microwave frequencies.

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Section: Matrixmentioning

confidence: 99%

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

et al. 2019

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“…The chosen five loads for the calibration of the six-port junction are reported in Table I. These five standards are chosen taking into account the possible values of the antenna input impedance and considering also the conditional number of the matrix C [11]. Indeed, we can link the accuracy of the calibration result and the choice of these five standards with the conditional number of the matrix C. For the loads reported in Table I, the conditional number of the matrix C is 5.…”

Section: Calibration Proceduresmentioning

confidence: 99%

An ultra-wideband sensing board for IoT

Petrocchi

Raffo

Avolio

et al. 2017

2017 13th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS)

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In this paper, we present an ultra-wideband impedance sensing board for the radio-frequency front-ends used in wireless units for the Internet of Things and the fifthgeneration wireless communication systems. We adopt as an impedance sensing board a six-port junction which was designed, fabricated, and tested experimentally in the frequency range from 5 GHz to 6 GHz. Moreover, the sensing board functionality was fully validated with load-pull measurements carried out in the same frequency range.

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“…They feature very simple structure, however, classic solutions having three probes operate in a narrow bandwidth . This drawback can be overcome by the application of higher number of power detectors arranged nonuniformly along the transmission line . The operational frequency range can be significantly enlarged, at the expense of the measurement conditions for specified frequencies.…”

Section: Introductionmentioning

confidence: 99%

Ultrabroadband multiprobe reflectometer

Staszek

Gruszczyński

Wincza

2015

Micro & Optical Tech Letters

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Novel synthesis of multiprobe reflectometers is presented. A developed estimation of measurement conditions allows for the choice of spacings between probes ensuring wideband operation. To verify the proposed concept, the multiprobe reflectometer having bandwidth 0.15–8GHz has been manufactured. The measurement results are close to ones obtained using vector network analyzer (VNA). © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1968–1971, 2015

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Design of a broadband multiprobe reflectometer

Cited by 14 publications

References 12 publications

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

An Ultra-Wideband Sensing Board for Radio Frequency Front-End in IoT Transmitters

An ultra-wideband sensing board for IoT

Ultrabroadband multiprobe reflectometer

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