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7. Block Diagrams
7-1
7-1. RF Solution Block Diagram
GSM850/900 TX
RF out
3G PAM (RF3266)
AMP
AMP
Input
Matching
Output
Matching
Inter-Stage
Matching
Integrated
Power
Detector
Bias Circuit
Vcc1
Vcc2
Vreg Vmode Vccbias
VDET
RF in
RAMPOUT
Duplexer
RX
TX
ANT
Vdd
GaAs SW
VC1
VC4
VC3
VC2
SAW
SAW
SAW
SAW
LPF
LPF
UMTS TRX1
UMTS TRX2
UMTS TRX3
DCS/PCS TX
GSM850 RX
GSM900 RX
DCS RX
PCS RX
FEM
(LSHS-D085UK)
HB_RFOUT
LB_RFOUT
Integrated
Power
Control
HB_RFIN
HB_RFIN
2G PAM (RF3159)
BAND_SEL
VMODE
VRAMP
VBATT
TX_EN
RF out
MODEM
(PNX5217)
BB3G_RXIN
BB3G_RXIP
BB3G_RXQN
BB3G_RXQP
BB3
G
_
T
X
IN
B
B
3G
_T
X
IP
BB
3
G
_
T
X
Q
N
B
B
3G
_T
X
Q
P
REG
RF
FRAC’N
SYNTH
VCCTX
RF_DAC2
RF_DAC1
MIX1_B
MIX1_A
DAC
DAC
RF
FRAC’N
SYNTH
REG
CT
L
B
U
S
VCCRX
LNA1_OUT
LNA1_IN
V
CCL
O
R
X
VD
D
TS
T
CLK
VGACTL
DATA
EN
REFIN
RXIA
RXIB
RXQA
RXQB
G
NDT
X
TX
_
1
V
CCL
O
T
X
G
NDT
X
TX
IA
TX
Q
B
TX
Q
A
TX
IB
S
A
W
3G TRANSCEIVER
(UAA3582)
VCO+FREQUENCY
SYNTHESIZER
DCXO
I
ADC
Q
ADC
LNA
LNA
DIG
IT
A
L
FI
L
T
E
R
0 / 90
DVGA
PA
CTRL
M
U
X G
M
SK /
8
PSK
BAS
EBA
N
D
INT
E
RF
A
C
E
PGA
PGA
LNA
LNA
Φ
DET
LOW-IF
PGA
PGA
DVGA
AVGA
AVGA
XOUT
AFC
RAMPIN
I
Q
2G TRANSCEIVER
(AERO4221)
26MHz
Содержание SGH-P270
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