Ultra wide-band four-port reflectometer using only two quadratic detectors

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

doi:10.1109/mwsym.2008.4633182

Cited by 18 publications

(13 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this setup, the multi-port network analyzer is connected to a horn antenna. The microwave part of the system realized in microstrip technology consists of a passive multi-port junction with circuits of detection [11]- [12], [14]. A microcontrolor is used for the implementation of the calibration and the inverse problem tasks.…”

Section: Methodsmentioning

confidence: 99%

“…The knowledge of the MC is very important because water is responsible in a large extent of the physical deterioration of concrete structures [9]- [10]. In [11]- [12], a broadband microwave network analyzer based on a low-cost six-port technology for the measurement of complex reflection and transmission coefficients has been reported. This system associated to a single horn antenna in a monostatic configuration has been successfully applied for the characterization of dielectric materials [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

CW radar for monitoring water-to-cellular concrete

Haddadi¹,

Lasri²

2014

2014 44th European Microwave Conference

View full text Add to dashboard Cite

The physical deterioration of concrete structures is mainly caused by their moisture content. Consequently, methods dedicated to contactless, non-destructive and real-time monitoring of moisture content levels are required to control the deterioration of buildings. In this study, we propose an instrument integrating the hardware and software resources suited for the evaluation of the moisture content according to these requirements. The technique proposed is based on the measurement versus time of the reflection coefficient of a moist sample by means of a monostatic radar build up with a homemade network analyzer connected to a horn antenna. Experiments are conducted at the test frequency of 2.45 GHz to determine the concrete moisture content.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CW radar for monitoring water-to-cellular concrete

Haddadi¹,

Lasri²

2014

2014 44th European Microwave Conference

View full text Add to dashboard Cite

show abstract

“…Our particular interest is driven by the will to propose instruments integrating the hardware and software resources for new developments in the field of microwave characterization [15], [16]. In [17], a modified six-port techniquebased one decade microwave forward network analyzer has been proposed for the measurement of S-parameters in the frequency range 1-10 GHz.…”

Section: Measurement Setup and Specimensmentioning

confidence: 99%

Geometrical Optics-Based Model for Dielectric Constant and Loss Tangent Free-Space Measurement

Haddadi

Lasri

2014

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

A microwave free-space reflection method for determining the complex permittivity of planar dielectric materials is demonstrated. The method makes use of the measurement of the near-field microwave reflection coefficient of a metal-backed sample. The modeling of the structure and its calibration are based on geometrical optics considering spherical electromagnetic waves propagating through the material. The technique that presents a number of features such as low-cost, compactness, robustness, and reliability is a good candidate for industrial applications. As a demonstration, dielectric parameters extraction of building materials is experimentally demonstrated for wireless local area network operations in the 2.45-and 5-GHz bands.

show abstract

“…1). This system, introduced by the authors in 2008 [21], is a passive demodulator made of four Wilkinson power dividers (WD), a −π/2 phase-shifter and two quadratic detectors (QD).…”

Section: Design and Analysismentioning

confidence: 99%

“…Compared to previous works related to the development of six-port network analyzers, major improvements in both hardware and software resources are discussed. First, the circuit architecture proposed is based on the use of four-port correlators instead of conventional sixport ones [21]. The four-port correlator is a passive demodulator that requires only two quadratic detectors (instead of four in sixport correlators) to determine the magnitude and phase of a complex microwave signal.…”

Section: Introductionmentioning

confidence: 99%

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

Haddadi¹,

Lasri²

2012

PIER C

View full text Add to dashboard Cite

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.

show abstract

Ultra wide-band four-port reflectometer using only two quadratic detectors

Cited by 18 publications

References 9 publications

CW radar for monitoring water-to-cellular concrete

CW radar for monitoring water-to-cellular concrete

Geometrical Optics-Based Model for Dielectric Constant and Loss Tangent Free-Space Measurement

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

Contact Info

Product

Resources

About