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RF2153
Rev A18 001114
2
Application Schematic
Korea - CDMA
18 0
Ω
1.8 nH
9 p F
10 nF
10 pF
10 nF
15 pF
15 pF
RF IN
15 pF
1 k
Ω
15 pF
15 nH
1
2
3
4
5
13
12
11
10
9
67
8
16
14
15
VR EG
VM O D E
V
C
C
5.6 pF **
2.2 pF **
15 pF
RF O U T
12 nH *
15 pF
10 nF
1.0 pF + .2 5 pF
47
Ω
TL
1
TL
2
TL
3
C D M A (K orea)
T ran sm is sio n
Line Length
TL
1
30 m ils
10 0 m ils
30 m ils
TL
2
TL
3
T ied together fo r optim um linearity
* H igh Q inducto r (i.e ., C o ilcraft 0805H Q -se ries).
**H igh Q capacitors (i.e ., Johanson C -se ries).
27
Ω
2nd In te rstage tuning for
ce ntering frequency re sponse
B ypassing fo r V
CC
G round fo r 2nd
H a rm on ic T rap
1st In terstage tu ning to
m a tch in p ut re turn lo ss
T o m a tch input retu rn lo ss
and vary gain
B ypassing fo r
V
RE G 1 a nd V RE G 2
M a tching N etw o rk fo r
optim um load im pedance
B ia s re tu rn
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