a)
•Noise
figure is defined as the ratio of the input SNR to output SNR.
•From
a quality receiver we expect to get higher output SNR, that is low output noise
power.
•Output
SNR increases as noise figure decreases, therefore noise figure should be as
low as possible.
•Therefore
it is important that first stage of the highly sensitive radio receiver system
must design with low internal noise properties.
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