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11.2. RF Band
U103
Antenna Switch Module
DCS 1800 &
GSM 850 or
PCS 1900
EGSM 900
HBT
FL203
PCS 1900
FL202
DCS 1800
GSM 850 or
FL201
EGSM 900
U102
PA Module
U105
ATTN
BAND_SEL
Power
controller
U106
ATTN
VBATT
U101
Transceiver
Voltage
Regulator
1/2
1/4
TX Bias
1/2
BSW
Driver
Balun
– 11-2 –
LF
VCO
CLG
Control
Adjust
VCO
Timing &
Bias
Fast
Measurement
Fast CP
RFD
MMD
Frac CW
SigmaDelta MASH
Int CW &Cntrl
Modulator
RX/TX Cntrl
Gauss
Fif0
Filter
IDA (I/Q
to Digital
Adapter)
1/4
Balun
VC1
VC2
VC3
EN
3-Wire
DA
Bus
CLK
DAO
U401
TCXO
Module
AFC
BUFEN
BUFOUT
B
BX
A
AX
TXON_PA
PALEVEL
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