Results 261 to 270 of about 1,403,607 (305)

Millimeter-wave radiometric imaging

International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990
The capabilities of radiometric imaging of the environment with the German Aerospace Research Establishment (DLR) modular linescanner system are demonstrated. Efficient information enhancement algorithms have been shown to improve the data interpretation and evaluation.
Süß, H., Grüner, K.
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MILLIMETER-WAVE SPECTROSCOPY OF METHOXYMETHANOL

Proceedings of the 71st International Symposium on Molecular Spectroscopy, 2016
Methoxymethanol (CH_3OCH_2OH), a ten atoms molecule, is a very interesting candidate for the detection in the interstellar medium since it can be formed by the reaction between both possible radicals of methanol: CH_3O (already detected in the ISM) and CH_2OH.
Motiyenko, R. A., Margulès, L., Guillemin, J.-C., Despois, D.   +3 more
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Millimeter Wave Subscriber Loops

IEEE Journal on Selected Areas in Communications, 1983
Advantages and drawbacks of using millimeter waves in the telephone and data subscriber distribution network are listed. Fields in which it seems attractive to use millimeter wave loops are examined. For such applications, cost and reliability constraints led to the design of very simple systems.
Philippe Dupuis, Sylvain Meyer, Michel Goloubkoff, Jean Jerome Guena   +3 more
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Printed millimeter-wave reflectarrays

Annales Des Télécommunications, 2001
Des structures periodiques et quasi-periodiques, imprimees sur un substrat dielectrique peuvent etre employees pour commander les proprietes de reflexion et de transmission des ondes incidentes en fonction de la structure geometrique. Ceci peut etre realise pratiquement independamment pour les deux polarisations.
Dietmar Pilz, Wolfgang Menzel
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Millimeter-Wave Integrated Circuits

Topical Meeting on Picosecond Electronics and Optoelectronics, 1987
The opportunities offered by monolithic millimeter-wave technology span radar, communications, electronic warfare, and missile seekers. These opportunities relate to size, weight, and cost reduction advantages over standard metal waveguide and hybrid integrated circuit implementations.
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Multibeam Antenna in Millimeter Waves

32nd European Microwave Conference, 2002, 2002
This paper deals with a multibeam antenna in 60 GHz band. This structure is based on a Butler Matrix which fed a four printed antenna array. Two different solutions are presented to avoid the crossing point of the microstrip line : a microstrip-thick slot-microstrip transition or two hybrids 90°.
Lafond, Olivier, Himdi, Mohamed
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MILLIMETER WAVE SPECTRUM OF NITROMETHANE

Proceedings of the 71st International Symposium on Molecular Spectroscopy, 2016
Abstract A new study of the millimeter wave spectrum of nitromethane, CH3NO2, is reported. The new measurements covering the frequency range from 49 GHz to 237 GHz have been carried out using the spectrometer in IRA NASU (Ukraine). Transitions belonging to the |m| ≤ 8 torsional states have been analyzed using the Rho-axis-method and the RAM36 program,
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Josephson millimeter wave oscillators

International Journal of Infrared and Millimeter Waves, 1990
This paper presents the state-of-the-art of a new class of microwave and mm-wave sources and intends to focus the attention of the microwave community on the new possibilities offered by them. Following a short introduction to the superconducting phenomena, the basic properties of Josephson tunnel junctions are presented.
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Survey Of Millimeter Wave Antennas

SPIE Proceedings, 1985
A wide variety of antennas has been designed or is currently under study for the millimeter wave region. An overview over these antennas is presented. Two classes of antennas are distinguished, i.e., antennas of conventional configuration and antennas based on new design approaches.
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The Large Millimeter-Wave Telescope

1997
The Large Millimeter-wave Telescope (LMT) is a joint project of the United States and Mexico. The project goal is to construct and operate a 50m diameter millimeter-wave antenna. The antenna, shown schematically in Figure 1, will be built on a mountain site in Mexico and will have the highest gain and the highest overall sensitivity of any millimeter ...
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