Experimental study of the effect of ground width for millimetre-wave multilayer coplanar waveguides in ceramic multichip module technology

This paper presents an experimental study of the propagation of mm-wave/low-THz signals in the frequency ranges of 79 and 300 GHz through fire. Radar performance was investigated in various real scenarios, including fire with strong flame, dense smoke and water vapour. A stereo video camera and a LIDAR were used as a comparison with other common types of sensors. The ability of radars to enable the visibility of objects in fire environments was proven. In all scenarios, the radar signal attenuation was measured, and in the case of steam was compared with theoretical calculations. The analysis of the experimental results allows us to conclude that there are good prospects for millimetre wave and Low Terahertz radar in the field of firefighting imaging equipment.

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Experimental study of millimetre-wave scattering from simulated hailstones in an open resonator

IEE Proceedings H Microwaves Optics and Antennas ◽

10.1049/ip-h-1.1981.0040 ◽

1981 ◽

Vol 128 (5) ◽

pp. 236 ◽

Cited By ~ 3

Author(s):

L.J. Auchterlonie ◽

D.L. Bryant

Keyword(s):

Experimental Study ◽

Wave Scattering ◽

Open Resonator ◽

Millimetre Wave

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Experimental Study on the Immersion Cooling of an Upward-Facing Multichip Module with an Opposing Condensing Surface.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ◽

10.1299/kikaib.63.1661 ◽

1997 ◽

Vol 63 (609) ◽

pp. 1661-1666

Author(s):

Shu-Rong TIAN ◽

Hiroshi TAKAMATSU ◽

Hiroshi HONDA

Keyword(s):

Experimental Study ◽

Multichip Module ◽

Immersion Cooling

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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