Block Diagrams
4-2
4-2 Main RF
Antenna
S/W
(U208 )
Dual
SA
W
Filter
(F203)
LNA
LNA
Bias
Circuit
Bias
Circuit
RF
SA
W
Filter
RF
SA
W
Filter
Mixer 1
Mixer 1
Mixer 2
IF
SA
W
Filter
225 MHz
LC
Filter
45 MHz
PGA
Serial data
Interface
I&Q
Demod.
IRXP
IRXN
QRXP
QRXN
SYNTHDA
T
A
SYNTHCLOCK
AGCLE
90 deg
Shift
1/2
RXEN1
RXEN2
TXEN
RAMPDAC
BAND Selection
ITXP
ITXN
QTXP
QTXN
IF VCO
(U104 )
PLL1
PLL2
Loop
Filter
Loop
Filter
VCTCXO
(13MHz)
RF VCO(U107)
AFCDAC
935 ~ 960 MHz
1805
~
1880
MHz
Dual PLL
(U106)
PCN : 1580 ~ 1655 MHz(Rx)
1575 ~ 1650 MHz(Tx)
GSM : 1
150 ~ 1
185 MHz
540 MHz
1/2
1/6
PCN : 270 MHz
GSM : 540 MHz
I&Q
Mod.
45 MHz
270 MHz
GSM : 270 MHz
PCN : 135 MHz
GSM : 270 MHz
PCN : 135 MHz
90 deg
Shift
1/2
Phase
Detector
Loop
Filter
TX VCO
(U200)
Dual P
A
M
(U106)
APC IC(U205)
TXEN
BAND Selection
TXEN
BAND Selection
RAMPDAC
890 ~ 915 MHz
1710
~
1785
MHz
Q200
Q201
F201
F202
(U201)
HD155121F
F200
C212
L200
U414
VP40553-2
Coupler
(U206)
Coupler
(U207)
(U100)
Main RF Block Diagram
Summary of Contents for SGH-N100
Page 11: ...Exploded Views and Parts List 1 9 1 11 Desk Top Charger DESK TOP CHARGER GH44 00163A ...
Page 12: ...PCB Diagrams 2 PCB Diagrams 2 1 Main Top ...
Page 13: ...2 1 ...
Page 14: ...PCB Diagrams 2 1 Main Bottom ...
Page 15: ...2 2 ...