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3-1
3. SGH-Q208 Block Diagrams
3-1. RF Solution Block Diagram
ANTENNA
RF
FIL
TER
LPF
LPF
GSM:880 MHz 915 MHz
GSM:880 MHz 915 MHz
GSM:925 MHz 960 MHz
DCS:1710 MHz 1785 MHz
DCS:1710 MHz 1785 MHz
DCS:1805 MHz 1880 MHz
PA
M
TX VCO
RF
FIL
TER
FEM
LNA
LNA
RX
SA
W
RX
SA
W
RF VCO
GSM :1
150 MHz 1
185 MHz
DCS:RX:1580 MHz 1655 MHz
TX :1575 MHz 1650 MHz
RF
SYNTH
IF
SYNTH
MIXER 1
IF VCO
1080 MHz
1/2
1/6
1/2
IF
SA
W
225 MHz
MIXER 2
LC
FIL
TER
45 MHz
PGA
I,Q
DEMOD
SERIAL
DA
T
A
INTERF
ACE
270 MHz
SWITCH
DCS:270 MHz
GSM:540 MHz
1/2
1/2
GSM:270 MHz
DCS:135 MHz
I,Q
MODULA
T
O
R
PD
LOOP
FIL
TER
GSM:270 MHz
DCS:135 MHz
UI
AUDIO
SERIAL
D
ATA
,
CLK,
LE
OCTL
SIGNALS
RF
DRIVER
DAI
I,Q
I,Q
CSP1089
TRIDENT
DSP16000
ARM7TDMI