Sensitivity study on the measurement of the reflection coefficient in a short-circuited rectangular waveguide filled with a liquid

A magnetic-controlled detection system, with a rectangular solenoid coil in a waveguide test fixture, is proposed for radar absorbing coatings. By applying Ku-band rectangular waveguide, the field patterns at different positions, the reflection coefficient S11 and its variation of several coating samples are simulated and measured under current loaded from 0 to 1.0 A. The results show that this detection system is repeatable and stable, and also reliable with the error of less than 10%.

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A study on reflection coefficient from double layered lossy dielectric by using flanged rectangular waveguide

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) ◽

10.1109/aps.1999.789139 ◽

2003 ◽

Cited By ~ 1

Author(s):

M. Hirano ◽

M. Takahashi ◽

M. Abe

Keyword(s):

Reflection Coefficient ◽

Rectangular Waveguide ◽

Lossy Dielectric

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Approximate Formula for the Phase of the Aperture-Reflection Coefficient of Open-Ended Rectangular Waveguide

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2003.822449 ◽

2004 ◽

Vol 52 (1) ◽

pp. 318-321 ◽

Cited By ~ 4

Author(s):

K.T. Selvan

Keyword(s):

Reflection Coefficient ◽

Rectangular Waveguide ◽

Approximate Formula

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Reflection Coefficient of a Conducting Sphere on the Broad Wall of a Rectangular Waveguide

IEEE Transactions on Microwave Theory and Techniques ◽

10.1109/tmtt.1984.1132732 ◽

1984 ◽

Vol 32 (6) ◽

pp. 582-586 ◽

Cited By ~ 1

Author(s):

J.D. Cashman ◽

H.E. Green

Keyword(s):

Reflection Coefficient ◽

Rectangular Waveguide ◽

Conducting Sphere

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Messung hoher Elektronendichten mit einer neuartigen Mikrowellen-Reflexionssonde an einem linearen z-Pinch

Zeitschrift für Naturforschung A ◽

10.1515/zna-1966-0921 ◽

1966 ◽

Vol 21 (9) ◽

pp. 1471-1478 ◽

Cited By ~ 1

Author(s):

H. Hermansdorfer

Keyword(s):

Reflection Coefficient ◽

Phase Angle ◽

Rectangular Waveguide ◽

Critical Density ◽

Probe Method ◽

Local Measurement ◽

Electron Densities ◽

Microwave Reflection ◽

Z Pinch ◽

Reflection Probe

A microwave reflection probe method allowing the local measurement of electron densities well above the critical density is described. Measurements in the 35 Gc/s band on a z-pinch show its applicability. A rectangular waveguide with a dielectric aperture window serves as a probe. The interferometer for measuring the reflection coefficient is presented. It indicates phase angle and amplitude automatically without using modulators or frequency translators. Electron densities between about 1013 cm-3 and 1016 cm-3 could be measured, facilitated by the transforming action of a dielectric λ/4-window.

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