Overall receiver noise temperature expression if T1, T2 are amplifier 1, 2, and so on noise Temperature and G1, G2, and so on are their gain respectively is_____

T = T 1 +T 2 (1-G 1 )+T 3 (1-G 1 G 2 )+

T = (T_1+ frac{T_2}{G_1}+ frac{T_3}{G_1 G_2}+ )

T = (T_1+ frac{T_2}{(1-G_1)}+ frac{T_3}{(1-G_1 G_2)}+ )

Overall receiver noise temperature expression if T1, T2 are amplifier

1.	Overall receiver noise temperature expression if T1, T2 are amplifier 1, 2, and so on noise Temperature and G1, G2, and so on are their gain respectively is_____
A.	T = (T_1+ frac{T_2}{G_1}+ frac{T_3}{G_1 G_2}+ )
B.	T = T<sub>1</sub>+T<sub>2</sub> (1-G<sub>1</sub>)+T<sub>3</sub>(1-G<sub>1</sub>G<sub>2</sub>)+
C.	T = (T_1+ frac{T_2}{(1-G_1)}+ frac{T_3}{(1-G_1 G_2)}+ )
D.	T = T<sub>1</sub>+T<sub>2</sub> (G<sub>1</sub>)+T<sub>3</sub>(G<sub>1</sub>G<sub>2</sub>)+
Answer» B. T = T<sub>1</sub>+T<sub>2</sub> (1-G<sub>1</sub>)+T<sub>3</sub>(1-G<sub>1</sub>G<sub>2</sub>)+