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electronics:rx:techinfo:documentation_p10mm

Technical Documentation of the 1cm Receiver 27 - 38 GHz (P10mm)

TypeHEMT cooled
Channel1
Receiver Noise Temperature10-40 K
Bandwidth RF-FiltersSee below filter combination
PolarizationLinear
CalibrationNoise Diode
Feed Primary Focus Horn
Frequency Range26.5 - 38.7 GHz
1.IF2 - 4 GHz (Broadband)
1.SynthesizerHolzworth HSM12001Frequency 9.75 - 11.95 GHz
Filter BandFrequency BandFrequency Synthesizer and LO1Side Band
Band 1 26.4 - 29.1 GHz F = 3*(9.75 - 10.7 GHz) = 29.25 - 32.1 GHz LSB
Band 2 28.5 - 33.7 GHz F = 3*(10.5 - 11.9 GHz) = 31.50 - 35.7 GHz LSB
Band 3 32.3 - 38.7 GHz F = 3*(9.77 - 11.9 GHz) = 29.31 - 35.7 GHz USB
2.IF500 - 1000 MHz
2.Local Oscillatorfixed Phase Locked OscillatorLO2=3.75 GHz

Block Diagram

Simplified Block Diagram of p10mm_receiver_withholzworth.pdf, (ZMK on 26.03.2021)

Receiver Noise Temperature

Comments

This system is equipped with 3 RF-Filters to suppress mirror frequency reception. During observation, the filter and ULO settings have to be selected according to the observation frequency (see block diagram).In March 2007 the LNA was replaced by an InP-HEMT MMIC-amplifier designed for the 9mm receiver. Therefore the noise figure at low frequencies is not ideal.This system is part of the Primary Focus Multi Frequency Box #1 (PM 1).

electronics/rx/techinfo/documentation_p10mm.txt · Last modified: 2021/03/30 12:48 by rkeller