Receiver Block Diagram - Nokia RH-57 Series Troubleshooting Manual

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Receiver Block Diagram

Note: See the Schematics chapter for a 2112 receiver schematic.
LNA SW Control
LNA
Antenna
Duplexer
TX
Issue 1 07/2004
CELL
SAW
RFA
UHF VCO
1052.61-1077.57
UHF Synthsizer
Loop Filter
JEDI
Figure 19: Receiver block diagram
©2004 Nokia Corporation
VGA
IF SAW
IFA
VCTCXO
Company Confidential
Troubleshooting - RF
CDMA
I/Q Down
BB Filter
Converter
BB AMP
CDMA
BB Filters
BB AMP
VHF PLL
2 ÷
367.2 MHz
Reference Clock
To Base-Band
AFC
2112 (RH-57)
To BB
Page 31