DUAL-PERFORMANCE LOW NOISE AMPLIFIER FOR SATELLITE-BASED RADIOFREQUENCY COMMUNICATION

A low noise amplifier device for receiving a radio frequency signal from a satellite contains an amplifier kept in a sealed chamber in a cryostat, and a cryogenic cooler mounted on the outside of the cryostat. The amplifier is: maintained in the sealed chamber attached to a cold finger of the cryoge...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RAWSON STEPHEN, RAYET REMI, FAUROUX BENOIT, CHAMBON CEDRIC, BONHOURE THOMAS
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A low noise amplifier device for receiving a radio frequency signal from a satellite contains an amplifier kept in a sealed chamber in a cryostat, and a cryogenic cooler mounted on the outside of the cryostat. The amplifier is: maintained in the sealed chamber attached to a cold finger of the cryogenic cooler, made of a material with good heat conductivity and without direct contact with the wall of the cryostat; connected to the input and output coupler, each traversing the wall of the cryostat; functional at room temperature and at least one cryogenic temperature well below room temperature; and the sealed chamber of the cryostat contains a gas at a pressure between a pressure close to the pressure outside the cryostat and 0.1 millibar.