EXAMPLE 6.24. Obtain the equivalent noise temperature of the following low noise receiving system. Assume room temperature to be 17°C. Pre Amplifier Converter or IF Low Noise Amplifier Amplifier A1 A2 A3 Fig. 6.33 It is Given that : Low noise amplifier gain A, = 25 dB Low noise amplifier noise temperature Te = 4°K Pre-amplifier gain A, = Pre-amplifier noise figure F, = 6 dB Converter and IF amplifier noise figure F = 12 dB = 17 dB

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EXAMPLE 6.24. Obtain the equivalent noise temperature of the following low noise
receiving system. Assume room temperature to be 17°C.
Low Noise
Amplifier
Pre Amplifier
Converter or IF
Amplifier
A1
A2
A3
Fig. 6.33
It is Given that :
Low noise amplifier gain A, = 25 dB
Low noise amplifier noise temperature T = 4°K
Pre-amplifier gain A, = 17 dB
Pre-amplifier noise figure F, 6 dB
Converter and IF amplifier noise figure F3 = 12 dB
%3D
Transcribed Image Text:EXAMPLE 6.24. Obtain the equivalent noise temperature of the following low noise receiving system. Assume room temperature to be 17°C. Low Noise Amplifier Pre Amplifier Converter or IF Amplifier A1 A2 A3 Fig. 6.33 It is Given that : Low noise amplifier gain A, = 25 dB Low noise amplifier noise temperature T = 4°K Pre-amplifier gain A, = 17 dB Pre-amplifier noise figure F, 6 dB Converter and IF amplifier noise figure F3 = 12 dB %3D
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