4-2
Block Diagrams
4-2 Main RF
IF SA
W
Filter
(225MHz)
LC
Filter
(45MHz)
Dual P
o
w
er AMP Module
SI4133G-XM2
VCTCXO
13MHz
HD155128TF
IF VCO
1080MHz
925~960MHz
Ant.
S/W
VC1(GSM)
VC2(DCS)
LPF
LPF
Dip
.
TX
Rx Dual
SA
W
filter
1805~1880MHz
Rx
Dual
SA
W
filter
LNA
LNA
PLL1
PLL2
PGA
90
°
Shift
÷
2
90MHz
÷
6
90
°
Shift
÷
2
DCS :
270MHz
GSM :
540MHz
I&Q
Mod.
GSM :
270MHz
DCS :
135MHz
Phase
Detector
Loop
filter
GSM :
270MHz
DCS :
135MHz
Baseband
Bloc
k
880 ~ 915MHz
1710 ~ 1785 MHz
Tx Dual
VCO
APCIC
Mix
er 2
Ser
ial data
interf
ace
45MHz
270MHz
÷
2
GSM :
1150~1185MHz
DCS :
1580~1655MHz
I
-I
Q
-Q
I&Q Demo
.
I
-I
Q
-Q
CLK
S
D
ATA
LE
bias circuit
Mix
er 1
RF VCO
÷
2
540MHz
Dual Directional
Coupler
GSM :
1150~1185MHz
DCS :
1575~1650MHz
(CH 62 :
947.4MHz)
(CH 698 :
1842.4MHz)
(CH 62 :
902.4MHz)
(CH 698 :
1747.4MHz)
CH 62 :
1172.4MHz
CH 698 :
1617.4MHz