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Hot and cold space radio testing
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ESA’s newest radio-frequency test facility allows direct measurement of antenna systems in the very vacuum conditions and thermal extremes they will work in, including the chill of deep space. It will soon be put to work testing the Juice mission’s radiometer – destined to probe the thin atmospheres of Jupiter’s largest moons.
The recently completed facility is called the Low-temperature Near-field Terahertz Chamber , or Lorentz. Based at ESTEC in the Netherlands, it can test high-frequency RF systems such as stand-alone antennas and complete radiometers at between 50 to 1250 Gigahertz in space-quality vacuum for several days on end, in temperature from just 90 degrees above absolute zero up to 120 °C.

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