Pasquali Microwave Systems supplies a wide range of microwave absorbers to support the calibration and test of wireless & satellite antenna systems. Eccosorb large calibrator plates and small targets (loads) have been manufactured for ESA Planck LFI operating at a temperature of 4K.
LOADS FOR RADIOMETRIC REFERENCE
LOADS FOR RADIOMETRIC REFERENCE
CYLINDRICAL CRYOGENIC CALIBRATOR (SKY LOAD)
The cylindrical calibrator (diameter = 200 mm; height = 300 mm) has internal walls completely covered by a layer squared base pyramids in ECCOSORB™ (height= 30 mm; base length = 5 mm). The layer of pyramids absorbs the RF power and minimizes reflections, thus reproducing a “blackbody”, i.e. a clear sky. The calibration of a single radiometer is performed when its feed-horn is placed into the cylinder.
CALIBRATOR FOR SATELLITE RADIOTELESCOPE
Developed for on-earth calibration of ESA PLANCK LFI (Low Frequency Instrument).
This calibrator is made of 40 panels of ECCOSORB™ pyramids covering an aluminium plate with diameter 780 mm. The pyramids (height= 20 mm; base length = 10 mm) are sized so that the full layer of ECCOSORB™ behaves as a “blackbody” i.e. absorbing al RF emissions up to Q-Band, thus permitting the on-earth calibration of the radiotelescope instrument.
70 GHZ TARGET
This 70 GHz flight model consists of an aluminum box containing an ECCOSORB™ target (Size: 18 mm x 14 mm x 11 mm). Thermal conduction between Aluminium and Eccosorb in cryogenic environment till 4K is assured.
Each target passed vibration tests, as Flight Specification, and RF tests.