Results 151 to 160 of about 157,315 (201)
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Millimeter-Wave Integrated Circuits
IEEE Transactions on Microwave Theory and Techniques, 1968Monolithic millimeter-wave integrated circuits have been designed and fabricated on semi-insulating GaAs substrates using microstrip transmission lines. Circuits using hybrid techniques have also been constructed on quartz and ceramics. This paper shows that microstrip-line integrated circuits are feasible at millimeter-wave frequencies.
S. Mao, S. Jones, G.D. Vendelin
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Millimeter-wave radiometric imaging
International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990The 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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Physics Today, 1950
Electromagnetic radiation, an inexhaustable natural resource, plays an extremely important part in modern technology and living. We use very short wavelength radiation, that is, x-rays, in searching for otherwise hidden defects. We use longer wavelength radiation, that is, light, to see by. We can take photographs with infrared radiation.
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Electromagnetic radiation, an inexhaustable natural resource, plays an extremely important part in modern technology and living. We use very short wavelength radiation, that is, x-rays, in searching for otherwise hidden defects. We use longer wavelength radiation, that is, light, to see by. We can take photographs with infrared radiation.
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Josephson millimeter wave oscillators
International Journal of Infrared and Millimeter Waves, 1990This 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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Millimeter-Wave Integrated Circuits
Topical Meeting on Picosecond Electronics and Optoelectronics, 1987The 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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Proceedings of the IEEE, 1962
The characteristics of a number of different kinds of masers are reviewed to estimate their usefulness in the region between one and a tenth millimeter. An estimate of the maximum power output for these systems is made and compared with the output to be expected from mixing two optical signals in a nonlinear dielectric and on a photocathode ...
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The characteristics of a number of different kinds of masers are reviewed to estimate their usefulness in the region between one and a tenth millimeter. An estimate of the maximum power output for these systems is made and compared with the output to be expected from mixing two optical signals in a nonlinear dielectric and on a photocathode ...
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Proceedings of the 19th ACM Workshop on Hot Topics in Networks, 2020
Backscatter networks (such as RFID, and WiFi backscatter) are very attractive for IoT applications due to their ultra-low energy consumption. In fact, their required energy to operate is low enough that it can be harvested from the environment without having a battery. However, existing backscatter networks offer very limited data-rates (i.e.
Mohammad Hossein Mazaheri +2 more
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Backscatter networks (such as RFID, and WiFi backscatter) are very attractive for IoT applications due to their ultra-low energy consumption. In fact, their required energy to operate is low enough that it can be harvested from the environment without having a battery. However, existing backscatter networks offer very limited data-rates (i.e.
Mohammad Hossein Mazaheri +2 more
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1988
Abstract : The properties of two types of antennas suitable for operation at millimeter wave frequencies (100 to 300 GHz) have been investigated both theoretically and experimentally. The type of radiators considered were printed- circuit or microstrip antennas and dielectric resonator antennas. Special emphasis was placed on the problem of integrating
David R. Jackson, Stuart A. Long
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Abstract : The properties of two types of antennas suitable for operation at millimeter wave frequencies (100 to 300 GHz) have been investigated both theoretically and experimentally. The type of radiators considered were printed- circuit or microstrip antennas and dielectric resonator antennas. Special emphasis was placed on the problem of integrating
David R. Jackson, Stuart A. Long
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SPIE Proceedings, 2002
This paper describes a reflectometer, which can operate at either 35 or 94 GHz. A broadband signal is produced by a modulated noise source in either vertical or horizontal polarization. After reflection by the sample under test a super-heterodyne receiver detects this signal.
Roger Appleby +1 more
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This paper describes a reflectometer, which can operate at either 35 or 94 GHz. A broadband signal is produced by a modulated noise source in either vertical or horizontal polarization. After reflection by the sample under test a super-heterodyne receiver detects this signal.
Roger Appleby +1 more
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1962
Abstract : Transmission systems for use in the submillimeter wavelength region were studied. An extension of the theoretical analysis of trough waveguide is given. The computed launching efficiencies using magnetic line source excitation are presented in normalized form.
J. C. Wiltse +3 more
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Abstract : Transmission systems for use in the submillimeter wavelength region were studied. An extension of the theoretical analysis of trough waveguide is given. The computed launching efficiencies using magnetic line source excitation are presented in normalized form.
J. C. Wiltse +3 more
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