Results 201 to 210 of about 1,330,404 (244)

Millimeter Wave Antenna Technology

IEEE Journal on Selected Areas in Communications, 1983
Millimeter wave antenna technology has had a long history of development, and as millimeter wave systems evolve through planning to implementation, a significant amount of additional development work will be required. Millimeter wave antennas play a key role in the rationale for millimeter system designs because high spatial resolution can be achieved ...
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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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Fence guide for millimeter waves

Proceedings of the IEEE, 1971
In this paper a new waveguide for millimeter waves called "Fence Guide" is discussed. A description of the guide, the field distribution, and its characteristics is presented.
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Millimeter wave traveling wave tubes for the 21st Century

Journal of Electromagnetic Waves and Applications, 2021
Yuan Zheng, Claudio Paoloni, Neville Luhmann   +2 more
exaly