Page 234 - 30105-2003 การวิเคราะห์วงจรอิเล็กทรอนิกส์ความถี่สูง

226
6.

E = I R + I R
S s S s in

E
I = S
s
( R + R in )
S
( E ) 2
P = E I = S (6.1)
in
S s
( R + R in )
S
2
E ) R in
2
( S
I
P out = ( ) R = 2 (6.2)
in
s
R +
( S R in )
2
R +
P (E S ) R in ( S R in )
P = out = ×
G
R +
P in ( S R in ) 2 (E S ) 2
R
% P = in (6.3)
G
( R + R in )
S

! 6.1 ก # 4' 6.1 ! " P !$ ก
" ! !1 H2 R ก R
S
G
in
R
"# $ ก !ก (6.3) P = in
G
( R + R in )
S
(4' P "$ ( (ก
G
R "$ " " ! 4
in
R "$ " " ! 4 I (6 E
S S
1 R R R 1
6 I R = R P = in = S = S =
in S G
4 ( R + R in ) (4R + R S ) 5R S 5
S
S
1 R R R 1
6 I R = R P = in = S = S =
in S G
3 ( R + R in ) (3R + R S ) 4R S 4
S
S
1 R R R 1
6 I R = R P = in = S = S =
in S G )
2 ( R + R in ) (2R + R S 3R S 3
S
S
R R R 1
6 I R = P = in = S = S =
R
in S G
( R + R in ) ( R + R S ) 2R S 2
S
S
R 2R 2R 2
6 I R = 2R P = in = S = S =
in S G
( R + R in ) ( R + 2R S ) 3R S 3
S
S
R 3R 3R 3
6 I R = 3R P = in = S = S =
in S G
( R + R in ) ( R + 3R S ) 4R S 4
S
S
R 4R 4R 4
6 I R = 4R P = in = S = S =
in S G
( R + R in ) ( R + 4R S ) 5R S 5
S
S
ก

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