A New Range Finder Based on a Four-Port Junction

Haddadi, Kamel; Wang, M.M.; Glay, D.; Lasri, T.

doi:10.1109/jsen.2009.2021189

Cited by 13 publications

(3 citation statements)

References 8 publications

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“…Of course, in most applications, general-purpose network analysers are not utilized fully. In order to reduce costs, simpler devices, such as a four-port reflectometer based on microstrip-line technology [291], have been proposed. Microstrip technology allows also for the construction of miniature array antenna, suited to effectively reduce the demands in the sample size [292].…”

Section: Free-space Methodsmentioning

confidence: 99%

Electromagnetic techniques for moisture content determination of materials

Kaatze

Hübner

2010

Meas. Sci. Technol.

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Based on a short introduction to the dielectric properties of water and aqueous solutions, this review summarizes current techniques of electromagnetic aquametry. The techniques described here include time-domain and frequency-domain procedures, enabling moisture determination in a broad spectral range from millihertz to terahertz frequencies. In this review, quasi-static capacitance and impedance approaches as well as microwave and submillimetre wave reflection, transmission and resonant methods are presented. Sensor configurations and electronic measurement setups, including remote sensing, are discussed briefly. A broad spectrum of applications is introduced to show the extended usability of electromagnetic techniques of moisture content determination. The dielectric properties of some reference materials, suitable for the calibration of sensors and of electronic measurement devices, are tabulated. Reference is also made to some dielectric models of water-containing materials and to superior evaluation routines.

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Section: Free-space Methodsmentioning

confidence: 99%

Electromagnetic techniques for moisture content determination of materials

Kaatze

Hübner

2010

Meas. Sci. Technol.

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“…Among these works, a four-port reflectometer has been demonstrated for the measurement of reflection coefficients [23]. A four-port range finder has been developed for distance measurement at 2.45 GHz [24]. A near-field microwave microscope has been developed for subsurface sensing applications [25].…”

Section: Design and Analysismentioning

confidence: 99%

One Decade Microwave Forward Network Analyzer Based on the Multi-Port Technique

Haddadi¹,

Lasri²

2012

PIER C

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Abstract-This paper presents a one decade low-cost forward network analyzer based on a modified six-port technique. An instrumentation integrating the hardware and software resources offering advantages such as robustness and compactness is developed. The microwave part of the system is fabricated in planar technology. Associated to this system, a one-step calibration procedure is implemented on an 8-bits microcontroller. The performance, in term of measurement accuracy, is evaluated by comparing the results obtained from the system proposed to those given by a conventional network analyzer in the frequency band 1-10 GHz.

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“…Conventional microwave characterization tools based on resonant cavities, waveguides, open-ended coaxial lines and free space methods have shown some potentials for the characterization of various materials [1][2][3][4][5][6]. Nevertheless a major drawback of these techniques is that their measurement sensitivity falls in the presence of high-loss media such as liquids [7,8].…”

Section: Introductionmentioning

confidence: 99%

Dielectric properties characterization of saline solutions by near-field microwave microscopy

Lin

Lasri

2016

Meas. Sci. Technol.

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Saline solutions are of a great interest when characterizations of biological fluids are targeted. In this work a near-field microwave microscope is proposed for the characterization of liquids. An interferometric technique is suggested to enhance measurement sensitivity and accuracy. The validation of the setup and the measurement technique is conducted through the characterization of a large range of saline concentrations (0–160 mg ml−1). Based on the measured resonance frequency shift and quality factor, the complex permittivity is successfully extracted as exhibited by the good agreement found when comparing the results to data obtained from Cole–Cole model. We demonstrate that the near field microwave microscope (NFMM) brings a great advantage by offering the possibility to select a resonance frequency and a quality factor for a given concentration level. This method provides a very effective way to largely enhance the measurement sensitivity in high loss materials.

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A New Range Finder Based on a Four-Port Junction

Cited by 13 publications

References 8 publications

Electromagnetic techniques for moisture content determination of materials

Electromagnetic techniques for moisture content determination of materials

One Decade Microwave Forward Network Analyzer Based on the Multi-Port Technique

Dielectric properties characterization of saline solutions by near-field microwave microscopy

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