2 edition of Submillimeter local oscillators for spaceborne heterodyne applications found in the catalog.
Submillimeter local oscillators for spaceborne heterodyne applications
Samuel J. Petuchowski
by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service in Washington, D.C, Springfield, Va
Written in English
Bibliography: p. 54-58.
|Statement||Samuel J. Petuchowski, Jeffrey Durachta.|
|Series||NASA reference publication ;, 1147|
|LC Classifications||TK7872.O7 P47 1985|
|The Physical Object|
|Pagination||iv, 58 p. :|
|Number of Pages||58|
|LC Control Number||85602315|
Broadband Submillimeter Receiver and Source Development. J.L. Hesler, D.W. Porterfield, W.L. Bishop, D.S. Kurtz, and T.W. Crowe. Design and analysis of GHz heterostructure barrier varactor quintuplers. Mattias Ingvarson, Arne Øistein Olsen, and Jan Stake. — GHz Local Oscillators for the Herschel Space Observatory Townes noise. Absorption spectrometers operate in a very different noise environment than most other SMM systems in that in the limit of maximum sensitivity for weakly absorbing lines they attempt to detect a small fractional change in a relatively large amount of power rather than to detect a small amount of power against background noise, as a communications or radar receiver ://
TOPIC: S1 Sensors, Detectors, and Instruments [ back to Solicitation] [ back to Chapter ][ back to Chapter 9][ back to table of contents] S Lidar and Laser System Components S Active Microwave Technologies S Passive Microwave Technologies S Sensor and Detector Technology for Visible, IR, Far IR and Submillimeter View program details for SPIE Astronomical Telescopes + Instrumentation conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy ?fuseaction.
occurring lasers and masers. Ground—based heterodyne spectrometers capable of the required resolving powers and sensitivities in the milli-meter and infrared regions exist and must be developed into spaceborne systems. Heterodyne systems in the submillimeter and long infrared wavelength regions are yet to be fully developed even for ground commercial applications. The implementation of QCLs as local oscillators (LOs) in heterodyne spectrometers for remote sensing with high spectral resolution [9, 10] is another potential application. THz heterodyne spectroscopy is a powerful technique. Many space- or airborne missions are equipped with THz heterodyne spectrometers .
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Submillimeter Local Oscillators for Spaceborne Heterodyne Applications Samuel J. Petuchowski GoddardSpaceFlight Center Greenbelt, Maryland Jeffrey Durachta University of Maryland College Path, Maryland NI A National Aeronautics and Space Administration Scientific and Technical Information Branch Submillimeter local oscillators for spaceborne heterodyne applications.
Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; Springfield, Va.: For sale by the National Technical Information Service, (OCoLC) Material Type: Government publication, National government Get this from a library.
Submillimeter local oscillators for spaceborne heterodyne applications. [Samuel J Petuchowski; Jeffrey Durachta; United States.
National Aeronautics and Space Administration. Scientific and Technical Information Branch.] Existing and prospective submillimeter local oscillator technologies are surveyed and compared with respect to criteria of suitability for application in spaceborne submillimeter heterodyne receivers as those proposed for the Large Deployable Reflector (LDR).
Solid-state and plasma devices are considered in terms of fundamental :// P/abstract. Submillimeter local oscillators for spaceborne heterodyne applications. Existing and prospective submillimeter local oscillator technologies are surveyed and compared with respect to criteria of suitability for application in spaceborne submillimeter heterodyne receivers as those proposed for the Large Deployable Reflector (LDR).
SUBMILLIMETER LOCAL OSCILLATORS FOR HETERODYNE SPECTROSCOPY* Edward J. Danielewicz, Jr. Electronics Research Laboratory The Aerospace Corporation P.O.
Box Los Angeles, CA SUMMARY The far infrared or submillimeter portion of the elektromagnetic Development of efficient backward wave oscillators for submillimeter applications.
needed as local oscillator (LO) sources in heterodyne receivers are required for spaceborne astronomy and As receiver arrays grow ever larger, the local oscillator power they require increases as well.
We have developed Terahertz (THz) Traveling Wave Tube Amplifiers (TWTA) that promise to provide more than enough power in the to GHz frequency range to pump the largest arrays being planned for submillimeter :// Martin Harwit papers, Collection Number: Submillimeter Local Oscillators for Spaceborne Heterodyne Applications.
Box Folder NASA Technical Memorandum: Telescope Systems for Balloon-Borne Research. Box Folder 18 Technological developments in the fields of THz mixer, local oscillators (LOs) and wideband spectrometers are described.
A review on existing airborne and spaceborne heterodyne receivers is given. Finally, possible future THz heterodyne receivers for the ESA-cornerstone FIRST (far-infrared and submillimeter telescope) and the astroplane SOFIA Development of local oscillators for CASIMIR.
is a far-infrared and submillimeter heterodyne spectrometer, being developed for the Stratospheric Observatory For Infrared Astronomy, SOFIA /_Development_of_local_oscillators_for_CASIMIR. Submillimeter local oscillators for spaceborne heterodyne applications [microform] / Samuel J.
Petuchows Variable impedance devices / edited by M. Howes, D. Morgan; Thin film multilayer conductor/ferroelectric tunable microwave components for communication applications A second submillimeter wave heterodyne instrument, Odin (Swedish Space Corporation ), was assembled and launched by teams from Sweden, Canada, France, and Finland in February .
This small but technically very ambitious satellite covers – GHz and – GHz with four cooled Schottky diode heterodyne › 百度文库 › 行业资料.
Sensor and Detector Technology for Visible, IR, Far IR and Submillimeter. Submitted Efficient, flight qualifiable, spur free, local oscillators for SIS mixers operating in low earth orbit. calibration targets and techniques for quantifying and calibrating out the impact of standing waves in broadband heterodyne Efficient, flight qualifiable, spur free, local oscillators for SIS mixers operating in low earth orbit.
Two bands: (1) tunable from to GHz, and (2) tunable from to GHz, phase-locked to or derived from an ultra-stable 5 MHz reference. Sideband separating SIS mixer with RF band from to GHz, IF band from 6 to 18 GHz, image Summary.
This section describes a Local Oscillator (LO) system using modern multiplier chains. The conventional approach to generating local oscillator (LO) power for millimeter and submillimeter wave heterodyne mixers is to generate power at a lower frequency using a suitable phase-locked source, and to convert this power to the desired commensurate frequency using a nonlinear ~demerson/project_book/chap7/chap/chaphtml.
Rolf Güsten. Scientist at Max-Planck-Institut für Radioastronomie. Optics and cryogenics for the THz multi-pixel heterodyne receiver for APEX. Norma Hurtado, Urs Graf Proc. SPIE. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI.
KEYWORDS: Bolometers, Telescopes, Mirrors semiconductor mixers, heterodyne receivers in the submil-limeter are currently crippled by the lack of available pump sources to serve as local oscillators (LO) - essential to the downconversion process.
For semiconductor mix-ers to 5 mW per receiver is needed. Superconducting SIS and HEB (hot electron bolometer) mixers ~maestrini/Work/Publications_files/IEEE MTTS THz waveguide. Moreover, some of the cryogenic sensors at submillimeter wavelengths provide almost quantum-limited sensitivity.
Frequency sources at submillimeter wavelengths with adequate output power for transmitters and local oscillators are not easily available, and pose the Search the leading research in optics and photonics applied research from SPIE journals, conference proceedings and presentations, and eBooks.
Abstract. Recent technological advances in detectors, coupling structures, local oscillators (LO) and spectrometer back ends have made possible the development of heterodyne receivers with high sensitivity and high spectral resolution (Δv/v ≅ ) for frequencies up to 3, GHz ( μm) and gh some of the technical solutions are still not ideal and need further improvement A recent confluence of technologies involving mixers, local oscillators, micromachining, IF amplifiers, and digital signal processing now make the fabrication of large format (∼ pixel), heterodyne arrays at THz frequencies possible.
Planned observatories at high altitude sites (e.g. the high Atacama and Dome A in Antarctica) and in the applications (spacebome and terrestrial). THz science and technology is still in its infancy. The next decade should prove to be even more exciting and productive than the last!
The 14 th International Symposium on Space TeraHertz Technology was held at the Loews Ventana Canyon Resort in Tucson, Arizona from April