Journal ArticleDOI
Experimental Attenuation of Rectangular Waveguides at Millimeter Wavelengths
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TLDR
In this paper, the experimental values of attenuation of commercially available rectangular waveguides were determined at frequencies between 25 and 200 GHz with emphasis on high accuracy, taking into consideration temperature effects, work hardening, size effects, surface roughness, and a room-temperature anomaly of the skin effect.Abstract:
The experimental values of attenuation of commercially available rectangular waveguides were determined at frequencies between 25 and 200 GHz with emphasis on high accuracy. They were compared with the theoretical values computed from the dc conductivities, taking into consideration temperature effects, work hardening, size effects, surface roughness, and a room-temperature anomaly of the skin effect. A new way to express the excess attenuation due to these effects was fomulated. Excess ratios of attenuation of coin-silver waveguides were found to be well below the values used in engineering in the past. They can satisfactorily be explained by surface roughness. The normalized excess attenuations of copper guides are higher than those of guides made of silver but lower than cited in the literature.read more
Citations
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Journal ArticleDOI
Plasma physics and related challenges of millimeter-wave-to-terahertz and high power microwave generationa)
TL;DR: In this article, the contemporary plasma physics and other related issues of compact, high power mmw-to-THz sources are compared and contrasted to those of classic HPM generation, and future research challenges and opportunities are discussed.
Journal ArticleDOI
Silicon micromachined waveguides for millimeter-wave and submillimeter-wave frequencies
TL;DR: In this article, the development of micromachining techniques to create silicon-based waveguide circuits, which can operate up to high submillimeter-wave frequencies, is reported.
Journal ArticleDOI
Terahertz Conductivity of Copper Surfaces
M. P. Kirley,John H. Booske +1 more
TL;DR: In this article, the authors used a semi-confocal open resonator system to measure the conductivity of copper at room temperature and showed that the classical Drude theory is sufficient for predicting the THz conductivity, dc conductivities, roughness, and microstructure of copper.
Journal ArticleDOI
Hybrid 3-D-Printing Technology for Tunable THz Applications
William J. Otter,Stepan Lucyszyn +1 more
TL;DR: This new hybrid 3-D printing THz technology, which combines semiconductor devices with potentially low-cost, high-performance passive guided-wave structures represents a paradigm shift and may prove to be an ideal solution for implementing affordable transceivers in future ubiquitous THz applications.
Journal ArticleDOI
Theoretical and experimental characteristics of single V-groove guide for X-band and 100 GHz operation
TL;DR: In this article, a conformal mapping technique for single-groove guide is discussed and applied to grooves of V-shaped cross section, which transforms the V-guide into the parallel-wall guide filled with a nonisotropic and nonuniform medium.
References
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Journal ArticleDOI
Plasma diagnostics with microwaves
Journal ArticleDOI
Rectangular-waveguide attenuation at millimetre wavelengths
F.A. Benson,D.H. Steven +1 more
TL;DR: In this article, the attenuations produced by air-filled rectangular waveguides of various materials have been made at frequencies of 35, 70, and 140Gc/s.
Journal ArticleDOI
R.F. conductivity in copper at 8 mm wavelengths
TL;DR: In this paper, it was shown that the conductivity of copper can be reduced below the d.c.f. value by surface layers of low conductivity and stress in the bulk material.
Journal ArticleDOI
Excess Surface Resistance Due to Surface Roughness at 35 GHz
TL;DR: In this paper, the increase of surface resistance of plane copper surfaces caused by mechanically generated surface roughness was determined at 35 GHz by measuring and evaluating the Q values of an H-guide cavity with removable sidewalls.
Journal ArticleDOI
Anomalous skin effect of single-crystal copper in the millimeter-wave region at room temperature
TL;DR: In this article, the surface resistance of single-crystal copper at millimeter wavelengths (35 GHz) indicate existence of an anomalous skin effect at room temperature, and the surfaces were prepared in stress-free processes, annealed, and manipulated in purified hydrogen and argon.
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