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– 5-2 –
Figure 5.1. : RF Function Block Diagram
5.1.2. RF Function Block
ANTENNA SWITCH
BASEBAND
GSM
GSM
DCS
DCS
PCS
PCS
CP
DIV
TLCPO
VCPO
UVTUNE
TXVCO
26 MHz
VCTCXO
DIV
90
PA
PA
RXI+
RXI–
RQI+
RQI–
TXI+
TXI–
TQI+
TQI–
T/H
DATA, CLKL
FREF
DC O/C
LNA900IN
LNA1800IN
LNA1900IN
Σ∆
FRAC-N PLL
DC O/C
DC O/C
Σ
LOG EN
LOG EN
U1101
U1201
RF Transceiver with Power Ramping Controller, Integrated Crystal Oscillator for Multi-Band GSM, GPRS and EDGE Applications