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2. Main RF
EGSM RX
925~960 MHz
(CH62:947.4MHz)
DCS RX
1805~1880 MHz
(CH698:1842.4M
Hz)
U301
CN301
ANTTENA
RF
CONNECTOR
S/W
1710 ~ 1785 MHz
(CH698:1747.4MHz)
GSM TX
880 ~ 915 MHz
(CH62:902.4MH
z)
SI4200F (U302)
F302
SAW
PGA
/
/
FILTER
F301
/
SAW
PGA
/
FILTER
DCS TX
Dual PAM (U303)
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Si4201-BM (U304)
/
PGA
ADC
/
/
PGA
/
ADC
/
100KH
z
Si4133T-BM (U305)
RF
IF
PLL
PLL
PD
LPF
5-2
/
PGA
DAC
/
/
/
/
PGA
/
DAC
OSC301
VCTCXO
SGH-N620E Block Diagrams
I
Q
VP40578
AFC
I
Q
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