Samsung SGH-S108 Service Manual page 15

3. SGH-S108 Block Diagrams
1. RF Block Diagram
Antenna
GSM:925MHz~ 960MHz
L
N
RF
FILTER
A
DCS:1805MHz~1880MHz
RF PCS:1930MHz~ 1990MHz
FILTER
RF
FILTER
ASM
GSM:890MHz~ 915MHz
PAM
DCS:1710MHz~ 1785MHz
PCS:1850MHz~ 1910MHz
PGA
PGA
1/ 2
SI4200
D E T
RF
PLL
SI4133T
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A D C
CHANNEL
FILTER
A D C
100KHz
IF
PLL
C L K
3-1
CSP1093
R X
PGA
D A C
I,Q
PGA D A C
SI4201
SERIAL
DATA,
SERIAL DATA
CLK,
INTERFACE
LE
T X
I,Q
TCVCXO
13 MHz
A F C
UI
TRIDENT
DSP16000
ARM7TDMI