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Technical Documentation of the 18/21 cm Receiver 1.3 - 1.7 GHz (P200mm)

TypeHEMT cooled
Receiver Noise Temprature 10 K
Feed Prime Focus Horn
Frequency Range 1.2 - 1.8 GHz
Bandwidth available Narrow Band on Coax IF Broad Band on Optical IF
Bandwidth RF-Filters 1290 - 1430 MHz and 1580 - 1725 MHz 1.2 - 1.8 GHz and 1.5 - 1.8 GHz
CalibrationNoise diode Noise diode
PolarizationLHC and RHCLHC and RHC
Phaseshifterin LO-systemno
1.IF80 - 220 MHzNo down conversion
Local OscillatorULO1 or LO 1.2 - 1.8 GHz No

Block Diagram

Simplified Block Diagram of p200mm_receiver.pdf the complete receiver, (ZMK on 03.06.2019)


The 1.2-1.8 GHz system is a prime focus receiver with cooled HEMT amplifiers. The system is built to observe circular polarization, the transducer comprises a cooled linear transducer (design NRAO) followed by a cooled hybrid.This system is part of Primary Focus Multi Frequency Box #1 (PM 1).

electronics/rx/techinfo/documentation_p200mm.txt · Last modified: 2019/12/13 12:03 by ubach