00:02
Hello students, from the question we can write it as overall noise factor ft is equals to f1 plus f2 minus 1 by a.
00:15
This is equation 1.
00:21
For equation 2, x db is equals to 10 log into x2 minus divided by x1.
00:32
This is equation 1.
00:36
If nf is equals to 10 db, we can consider x db is equals to nf.
00:48
So f1 is equals to x2 by x1.
00:53
From this we can find out the f1 value.
00:56
F1 value is equals to 10.
00:59
Next, we can consider nf is equals to 25 db.
01:07
So we can substitute this in the second equation.
01:10
So we get x db is equals to nf.
01:15
So f2 is equals to x2 divided by x1...