Characterization of ferrimagnetic and dielectric materials with a rectangular waveguide—method, limits of validity

2005 ◽  
Vol 290-291 ◽  
pp. 90-93
Author(s):  
Chadi Nader ◽  
Bernard Bayard ◽  
Ali Siblini ◽  
Bruno Sauviac ◽  
Ahmad Jammal
Keyword(s):  
Rectangular Waveguide ◽  
Dielectric Materials ◽  
Waveguide Method

scholarly journals Characterization of Dielectric Materials by Sparse Signal Processing With Iterative Dictionary Updates

2020 ◽  
Vol 4 (9) ◽  
pp. 1-4
Author(s):  
Udaya S. K. P. Miriya Thanthrige ◽  
Jan Barowski ◽  
Ilona Rolfes ◽  
Daniel Erni ◽  
Thomas Kaiser ◽  
...  
Keyword(s):  
Signal Processing ◽  
Dielectric Materials ◽  
Sparse Signal ◽  
Sparse Signal Processing

Dielectric Characterization of Polyceram Films

1990 ◽  
Vol 180 ◽  
Author(s):  
G. Teowee ◽  
J.M. Boulton ◽  
H.H. Fox ◽  
A. Koussa ◽  
T. Gudgel ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Polyethylene Oxide ◽  
Dielectric Materials ◽  
Inorganic Materials ◽  
Functionalized Polymers ◽  
Multifunctional Materials ◽  
Dielectric Characterization ◽  
Silicon Alkoxides ◽  
Tan Δ

ABSTRACTPolycerams are an emergent class of hybrid, multifunctional materials which combine the properties of organic and inorganic materials. Films have been prepared from silicon alkoxides and reactive, functionalized polymers such as triethoxysilyl modified polybutadiene (MPBD), (N-triethoxysilylpropyl)O polyethylene oxide urethane (MPEOU) and trimethoxysilylpropyl substituted polyethyleneimine (MPEI). Characterization of dielectric constant and tan δ of the films has been carried out over a range of frequency from 500 Hz to 100 kHz; and the results are used to consider the potential of Polycerams as dielectric materials.

Additive technology applied to the realization of K-band microwave terminations: reproducibility improvement

2018 ◽  
Vol 10 (1) ◽  
pp. 3-8
Author(s):  
Azar Maalouf ◽  
Ronan Gingat ◽  
Vincent Laur
Keyword(s):  
3D Printing ◽  
Frequency Band ◽  
Rectangular Waveguide ◽  
Three Dimensional ◽  
Low Density ◽  
Support Material ◽  
Additive Technology ◽  
3D Printed ◽  
K Band

This study examines K-band rectangular waveguide terminations with three-dimensional (3D)-printed loads, and proposes an Asymmetrical Tapered Wedge topology. This geometry shows a good tradeoff between microwave performance and 3D-printing issues (printing directions and support material requirements), thus improving noticeably the reproducibility of the devices. The effect of the density of the 3D-printed load on the reflection parameter of the termination was investigated. Even for a low density, reflection level remained below −27.5 dB between 18 and 26.5 GHz. Reproducibility was demonstrated by the characterization of six loads that were 3D printed under the same conditions. Measurements demonstrate that a maximum reflection parameter level of −33.5 dB can be ensured over the whole frequency band without any post-machining of the 3D-printed devices.

Transmission microwave spectroscopy for local characterization of dielectric materials

2017 ◽  
Vol 35 (1) ◽  
pp. 01A113 ◽  
Author(s):  
Andrea Lucibello ◽  
Christopher Hardly Joseph ◽  
Emanuela Proietti ◽  
Giovanni Maria Sardi ◽  
Giovanni Capoccia ◽  
...  
Keyword(s):  
Dielectric Materials ◽  
Microwave Spectroscopy ◽  
Local Characterization

scholarly journals Ka-Band Characterization of Binder Jetting for 3-D Printing of Metallic Rectangular Waveguide Circuits and Antennas

2017 ◽  
Vol 65 (9) ◽  
pp. 3099-3108 ◽  
Author(s):  
Eduardo A. Rojas-Nastrucci ◽  
Justin T. Nussbaum ◽  
Nathan B. Crane ◽  
Thomas M. Weller
Keyword(s):  
Rectangular Waveguide ◽  
Ka Band ◽  
Binder Jetting
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