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Temperature Stress Test

High Demands on Travelling Wave Tubes for Data Communication in Satellites

Jul. 23, 2010
Fig. 1: Schematic structure and functional principle of a Thales travelling wave tube or microwave amplifier tube. Weak input signals are converted from a centrally bundled electron beam into an efficient output signal along a helix.
Fig. 1: Schematic structure and functional principle of a Thales travelling wave tube or microwave ... more
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In satellite technology travelling wave tubes are used as efficient and robust amplifier systems for microwave signals. The demands on quality and reliability of the tube amplifiers are very high. Their average economic life time in orbit, e.g. in geostationary satellites such as Astra is approximately 15-18 years. Intensive function and stress tests are carried out in advance to ensure a trouble-free operation. Cyclic temperature stress tests ensure that the signal amplification is always within the tolerance range even at fluctuating ambient conditions between -40°C and +90°C.

Authors:
Dr. Michael Seipel

Keywords : Electrons Lauda Magentic Field Satellite Technology Thermostat

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