Table of Contents
Advertisement
An
tenna
An
tenna
FEM
Transmitter (TX)
The RF transmitter i
s b
innovations. It provid the zero-IF transmit s
es
0 within the CDMA2 0 standard (Tx bands
00
amplifiers, quadratu
re
secondary T functio
x
ns
VCO ircuit, T LO gen ation and distribution
c
x
er
Page 5-32
Coupler
Duplexer
T Loop Fi ter
X
RX Loop Filt
F
igure 2 RX System block diag
ased upon the well-e
upco version, gain co rol RF amplification,
n
are integrate as wel
d
l: a
Company Confidential
Copyright © 2008 Nokia. All rights reserved.
PA
Power
detector
l
er
8
sta
blished RFT6122 IC
ign
al pa h for ce lular-CD
t
l
of
824 to 849 MHz). The trans it signal path
nt
reference for the tran
cir
cuits, and various inte ce, control, and status
System Module and User Interface
TX Filter
QSC6020
Cell Ba
nd
RX SA
W
ram
des
ign, ut imp oved to clude the latest
b
r
MA
transmission as defi
m
an
d an output driver am lifier. Numerous
sm
it DA s, the T phase-
C
x
rfa
RM-376
in
ned
by band class
inc
ludes baseband
p
loc
ked loop, the Tx
cir
cuits.
Issue1
Advertisement
Chapters
Table of Contents
Troubleshooting
