Low noise cryogenic receiver for spectroscopic applications in mm-wave radioastronomy at 230 GHz
Journal Article
·
· Microwave J.; (United States)
OSTI ID:6690846
A new cooled mm-wave receiver is presented. This receiver has been in operation since October 1985 with a 2.5 m Cassegrain telescope located at the Plateau de Bure in the French Alps. It is tunable from 210 to 240 GHz and has a DSB system noise temperature of 360 K and a 600 MHz instantaneous bandwidth. The receiver is composed of a local oscillator (klystron frequency tripler) and a Schottky diode mixer with a cooled FET amplifier. Quasi-optical techniques are used for signal injection. A computer-controlled microprocessor drives the whole system and performs calibration and frequency tuning of the receiver. The different parts of the receiver, frequency tripler, quasi-optical techniques, mixer, FET amplifier, and microprocessor, are described. 13 references.
- Research Organization:
- Meudon, Observatoire, France
- OSTI ID:
- 6690846
- Journal Information:
- Microwave J.; (United States), Journal Name: Microwave J.; (United States) Vol. 29; ISSN MCWJA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
640100* -- Astrophysics & Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
COMPUTERS
CRYOGENICS
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FIELD EFFECT TRANSISTORS
FREQUENCY CONVERTERS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
MICROWAVE RADIATION
RADIATIONS
RADIO EQUIPMENT
RADIOASTRONOMY
SEMICONDUCTOR DEVICES
TRANSISTORS
47 OTHER INSTRUMENTATION
640100* -- Astrophysics & Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
COMPUTERS
CRYOGENICS
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FIELD EFFECT TRANSISTORS
FREQUENCY CONVERTERS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
MICROWAVE RADIATION
RADIATIONS
RADIO EQUIPMENT
RADIOASTRONOMY
SEMICONDUCTOR DEVICES
TRANSISTORS