Page 238 - 30105-2003 การวิเคราะห์วงจรอิเล็กทรอนิกส์ความถี่สูง

230
6.

r
r bb′ ( b e ′ − JX C ) JX− C r b e ′ r r − JX C r bb′ − JX C r b e ′
′
bb b e ′
Z = T T = T T
in
r
r
( b e ′ − JX C T ) ( b e ′ − JX C T )
r r − JX C ( bb′ + r b e ′ )
r
′
bb b e ′
Z = T
in
r
( b e ′ − JX C T )
1
−
$ ก JX C =
ω
T
J C T
ω
ω
r
J C r r + ( bb′ + r b e ′ ) J C
′
T bb b e ′
Z = × T
in
ω
ω
J C T J C r + 1
T b e ′
ω
J C r r + ( bb′ + r b e ′ )
r
T bb b e ′
′
Z =
in
ω
J C r + 1
T b e ′
ω
r
′
( bb′ + r b e ′ ) + J C r r
T bb b e ′
% Z = (6.8)
in
ω
+
1 J C r
T b e ′
r bb′ b′
r
C T b e ′ V b e ′ g V C
Z m b e ′ ce
in Z out
Z in Z out
L L
E S mi R ip C ip C ce R out mo

# 4' 6.5 ก ! ;2 ก ( (( " !7' #
ก ' ( Z ก # ก !:!R ก6
5 ; %
in
Z = r θ
in
2
(r bb′ + r b e ′ ) + ( C r rω T bb b e ′ ) 2
′
r =
ω
2
1 + ( C r ) 2
T b e ′
 ( C r rω T bb b e ′ ) 


′
−
1
θ =  tan − 1  − { tan ω C r }
T b e ′
r
  ( bb′ + r b e ′ )  
ก

ก
ก