9 mm (32 GHz, Secondary Focus) Receiver - Modul 1 (Polarization)

Note

This system consists of two modules mounted as a 2 x 3 matrix.


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Receiver Data

TypeHEMT cooled
Channels6
Receiver Noise Temperature70 K
Frequency Range31 -33 GHz
Bandwidth RF-Filters31 -33 GHz
PolarizationLHC, RHC
CalibrationNoise Diode
Broadband Polarimeteryes (Frontendbox)
Feed3 x Horn A151
1. IF2-4 GHz
1. Oscillator29 GHz


Block Diagram



Comments

In module 1 each feed is followed by a circular polarization transducer and two cooled MPIfR HEMT amplifiers as first stages. It was planned to be used as a total power system with "software beamswitching". During the test of the first 3 feed module we found that the system was not stable enough for sensitive mapping of extended sources.



Report

html version (March 1996, in German)