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A new 3 mm band rec...
A new 3 mm band receiver for the Onsala 20 m antenna
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- Belitsky, Victor, 1955 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lapkin, Igor, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fredrixon, Mathias, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sundin, Erik, 1979 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Helldner, Leif, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pettersson, Lars, 1966 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ferm, Sven-Erik, 1961 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pantaleev, Miroslav, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Billade, Bhushan, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bergman, Per, 1960 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Olofsson, Henrik, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lerner, Mikael, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Strandberg, Magnus, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Whale, Mark, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pavolotskiy, Alexey, 1968 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Flygare, Jonas, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Olofsson, Hans, 1952 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Conway, John, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2015-07-23
- 2015
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 580
- Relaterad länk:
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http://publications.... (primary) (free)
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https://www.aanda.or...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A new receiver for the Onsala 20 m antenna with the possibility of being equipped with 3 mm and 4 mm bands has been built and the 3 mm channel has been commissioned during the Spring 2014. For single-dish operation, the receiver uses an innovative on-source/off-source optical switch. In combination with additional optical components and within the same optical layout, the switch provides two calibration loads (for the 3 mm and 4 mm channels), sideband rejection measurement, and tuning possibilities. The optical layout of the receiver employs all cold (4 K) offset elliptical mirrors for both channels, whereas the on-off switch employs flat mirrors only. The 3 mm channel employs a sideband separation (2SB) dual polarization receiver with orthomode transducer (OMT), 4-8 GHz intermediate frequency (IF), x? 2pol x? upper and lower sidebands (USB? +? LSB). The cryostat has four optical windows made of high density polyethylene (HDPE) with anti-reflection corrugations, two for the signal and two for each frequency band cold load. The cryostat uses a two-stage cryocooler produced by Sumitomo HI? RDK? 408D2 with anti-vibration suspension of the cold-head to minimize impact of the vibrations on the receiver stability. The local oscillator (LO) system is based on a Gunn oscillator with aphase lock loop (PLL) and four mechanical tuners for broadband operation, providing independently tunable LO power for each polarization. This paper provides a technical description of the receiver and its technology and could be useful for instrumentation engineers and observers using the Onsala 20 m telescope.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- Instrumentation: detectors
- Telescopes
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Belitsky, Victor ...
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Lapkin, Igor, 19 ...
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Fredrixon, Mathi ...
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Sundin, Erik, 19 ...
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Helldner, Leif, ...
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Pettersson, Lars ...
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Ferm, Sven-Erik, ...
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Pantaleev, Miros ...
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Billade, Bhushan ...
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Bergman, Per, 19 ...
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Olofsson, Henrik ...
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Lerner, Mikael, ...
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Strandberg, Magn ...
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Whale, Mark, 198 ...
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Pavolotskiy, Ale ...
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Flygare, Jonas, ...
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Olofsson, Hans, ...
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Conway, John, 19 ...
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