Results 21 to 30 of about 3,790 (296)
Applied Sciences, 2023 Radio astronomical observations at millimeter and submillimeter wavelengths are a very important tool for astrophysical research. However, there is a huge area in northeastern Eurasia, including the whole Russian territory, which lacks sufficiently large
Igor I. Zinchenko +4 more
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Technology Advances for Radio Astronomy [PDF]
, 2013 The field of radio astronomy continues to provide fundamental contributions to the understanding of the evolution, and inner workings of, our universe.
Russell, Damon Stuart
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Outflows and disks of brown dwarfs with SMA, CARMA and ALMA
EPJ Web of Conferences, 2013 Brown dwarfs are on the dividing line between planets and stars. Up to date, about 1,000 brown dwarfs, including the coolest known brown dwarfs with temperatures of ∼300 K as cool as the human body, have been discovered.
Tho Do D. +4 more
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IEEE Journal of Microwaves, 2022 This article presents development of CMOS system-on-chip spectrometer processor for Spaceborne Earth Science, Planetary Science and Astronomy. The developed chip is intended for use in rotational emission spectroscopy observations from microwave to sub ...
Adrian Tang +8 more
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Introduction to Millimeter/Sub-millimeter Astronomy [PDF]
, 2018 This is an introduction to the basic elements needed for the measurements and interpretation of data in the millimeter and sub-mm wavelength range. A more complete version will be published in the proceedings of the Saas Fee Winter School 2008.
openaire +2 more sources
Millimeter wave imaging : a historical review [PDF]
, 2017 The SPIE Passive and Active Millimeter Wave Imaging conference has provided an annual focus and forum for practitioners in the field of millimeter wave imaging for the past two decades.
Robertson, Duncan A. +5 more
core +1 more source
, 2007 Faraday rotators using permanently magnetized ferrite materials are used to make quasi-optical isolators and circulators at millimeter wave and sub-millimeter wave frequencies that have far higher performance than their waveguide equivalents.
Goy, P +7 more
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Development of Wideband Tunable E-Band (60-70 GHz) Gunn Oscillator [PDF]
Journal of Astronomy and Space Sciences, 2000 A Gunn waveguide-oscillator, mechanically tunable from 60 to 70 GHz, has been developed for use as a local oscillator (LO) in millimeter radio telescope.
Hyunjoo Kim +3 more
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A NEXT GENERATION MULTI-BEAM FOCAL PLANE ARRAY RECEIVER OF TRAO FOR 86-115 GHZ BAND [PDF]
Journal of Astronomy and Space Sciences, 2006 The noise temperature of existing millimeter-wave receivers is already within two or three times quantum noise limit. One of practical ways to increase the observation speed of single dish radio telescope without longer integration time is use of multi ...
Moon-Hee Chung +5 more
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Electromagnetic reprogrammable coding-metasurface holograms
Nature Communications, 2017 Realizing metasurfaces with reconfigurability, high efficiency, and control over phase and amplitude is a challenge. Here, Li et al. introduce a reprogrammable hologram based on a 1-bit coding metasurface, where the state of each unit cell of the coding ...
Lianlin Li +9 more
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