User Guide

NSM–3
System Module
PAMS Technical Documentation
Page 40
Issue 1 12/1999
 Nokia Mobile Phones Ltd.
RF Functional Description
Architecture contains one RF–IC, dualband PA module, VCO–module,
VCTCXO module and discrete LNA stages for both receive bands.
SHF VCO
PLL
VCXO
13 MHz to ASIC TXP
I
Q
TXIP TXIN TXQP TXQN
AFC
RXREF 1.2 V
f
f/2
HAGAR
f
f/2
f
f/2
f
f/2
TXC
SERIAL CTRL BUS
VREF_2 1.5 V
dual PA
SAW
BIAS
ANT SW
Diplexer
EGSM
PCN
EGSM
PCN
f
f/2
26 MHz
buffer