Analysis and Design of a Differential Sampled-Line Six-Port Reflectometer

Julrat, Sakol; Chongcheawchamnan, M.; Khaoraphapong, T.; Robertson, I.D.

doi:10.1109/tmtt.2012.2227788

Cited by 11 publications

(11 citation statements)

References 22 publications

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“…The parameters A, B, C, D, E, F, G and H of the DSPR are obtained from the six-port calibration procedure [12]. The CMRR of the DSPR can be evaluated as the ratio between the differential and common-mode signal transmissions [12]. It is noted that the core differential six-port network can be implemented with several topologies of six-port network, and is not only limited to the sampled-line structure which is used in this paper.…”

Section: Differential Spr (Dspr)mentioning

confidence: 99%

“…The chip balun, LDB21942M20C-001, from Murata is selected for single-ended to differential signal conversion. The chip balun provides at least 20 dB CMRR at 1 GHz [12].…”

Section: Differential Measurement System For Drc Determinationmentioning

confidence: 99%

“…Ten known electrical loads were chosen in the calibration procedure. It should be noted that the calibrated loads are chosen such that their reflection coefficients are distributed in the four quadrants of the Smith chart, as suggested in [12].…”

Section: Dspr Calibrationmentioning

confidence: 99%

“…The DSPR was recently proposed in [12] to counteract the common-mode noise effect for six-port measurements. Applying the previously proposed DSPR topology that employs a differential sampled-line six-port network operated at 1 GHz, a DRC measurement system equipped with a temperature sensor is realised.…”

Section: Introductionmentioning

confidence: 99%

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Differential six‐port reflectometer for determining dry rubber content of latex

Julrat¹,

Chongcheawchamnan

Robertson³

2015

IET Microwaves, Antennas & Propagation

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This study presents the application of a differential six-port reflectometer to the design of a portable system for measurement of the dry rubber content (DRC) of latex. The proposed DRC measurement system consists of a 1 GHz reflectometer used with an open-ended coaxial-probe sensor, a temperature sensor, a display and a microcontroller. The complex permittivity and temperature of the rubber latex are measured, and a temperature-dependent model for DRC determination based on a dielectric mixture theory is used. The reflectometer performance is verified by comparing the measured complex permittivity with the results obtained from a commercial dielectric measurement system. Finally, the accuracy of the DRC measurement system is assessed by comparing the measured DRCs from different latex samples over the range of 10-40°C with the standard oven-drying method.

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Section: Differential Spr (Dspr)mentioning

confidence: 99%

“…The chip balun, LDB21942M20C-001, from Murata is selected for single-ended to differential signal conversion. The chip balun provides at least 20 dB CMRR at 1 GHz [12].…”

Section: Differential Measurement System For Drc Determinationmentioning

confidence: 99%

Section: Dspr Calibrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Differential six‐port reflectometer for determining dry rubber content of latex

Julrat¹,

Chongcheawchamnan

Robertson³

2015

IET Microwaves, Antennas & Propagation

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“…Automated analyzers, based on six-port reflectometers (SPR), are widely used for measuring the parameters of the antenna and waveguide devices in the millimeter wavelength range [1][2][3][4]. In the measurement transducer of SPR the matched multiport passive microwave connection is used for the complex composition of the reference wave generator and the wave reflected from the object [5].…”

Section: Introductionmentioning

confidence: 99%

Properties of E-cross for six-port measurements

Карлов

Borulko

Andreev

2013

2013 IX Internatioal Conference on Antenna Theory and Techniques

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The problem of creating meter of complex reflection coefficient based on the electromagnetic approach using E-plane cross-shaped divider is studied. System of the integral equation describing scattering waves by the E-cross is solved. Rigorous electromagnetic model of direct and inverse problems of five-port measurements of complex reflection coefficient is derived. Frequency dependencies of model parameters is calculated. Properties of right and oblique crosses is investigated.

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Compact multilayer wideband symmetric five-port reflectometer

Al‐Bawri

Jamlos

Ibrahim

et al. 2017

Microw. Opt. Technol. Lett.

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This article presents a new design of a wideband, compact, and low‐cost symmetric five‐port reflectometer (5PR). The proposed 5PR features a wide operational bandwidth of 3240 MHz (about 162% centered at 2 GHz). Five‐symmetric branch‐lines consist of SCURVE, STEE, SLIN, and Term were designed and optimized to achieve an equivalent value of 78 dB for S11, S22, S33, S44, and S55 at center frequency of 2 GHz. Such consistent value between those S‐parameters proven a perfect matching impedance are successfully obtained by proposed symmetric 5PR even own a bandwidth as high as 162%. Moreover, the simulated and measured results show the proposed 5PR has realized magnitude of ≈ 0 dB (S11), 0.5 (S12, S13, S14, S15, S21, S23 … S54) as well as phase relative error of 120° which in parallel to theoretical values. With all capabilities mentioned, the proposed 5PR is a promising candidate to be installed in a microwave imaging system for biomedical applications in the future. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:802–805, 2017

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Analysis and Design of a Differential Sampled-Line Six-Port Reflectometer

Abstract: Analysis and design of a differential sampled-line six-port reflectometer. IEEE Transactions on Microwave Theory and Techniques, 61 (1). 244 -255.

Cited by 11 publications

References 22 publications

Differential six‐port reflectometer for determining dry rubber content of latex

Differential six‐port reflectometer for determining dry rubber content of latex

Properties of E-cross for six-port measurements

Compact multilayer wideband symmetric five-port reflectometer

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