2.30. A source with equivalent temperature T = 290K is followed by three amplifiers with specifications shown

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2.30. A source with equivalent temperature T = 290K is followed by three amplifiers with specifications shown in the table below.

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(a) Compute the noise figure for the three cascaded amplifiers.

(b) Compute the effective temperature for the three cascaded amplifiers.

(c) Compute the overall system noise figure.

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