Block Diagrams; Transmitter; Receiver - Nokia RH-3 Series Troubleshooting - Rf

RH-3
Troubleshooting - RF

Block Diagrams

Transmitter

The following figure illustrates a simplified block diagram of the transmitter. It illustrates
every major component from I and Q baseband all the way to the antenna port.
I
VHF LO
0º
From
÷2/÷4
Baseband
90º
Q

Receiver

The following figure illustrates a simplified block diagram of the receiver. It illustrates
every major component from the antenna port all the way to I and Q baseband
LNA SW Control
LNA
Antenna
LNA
PCS Duplexer
Cell Duplexer
Page 40
0º
UHF LO
0º 0º
90º 90º
90º
Figure 3: Transmitter Block Diagram
CELL
SAW
RFA
SAW
PCS
UHF VCO
1052.61-1077.57
2113.6-2173.55
UHF Synthsizer
Loop Filter
JEDI
Figure 4: Receiver Block Diagram
Nokia Corporation
CCS Technical Documentation
S
To Baseband
P
Detector
D
T
S
P
D
T
I/Q Down
Converter
VGA
IF SAW
IFA
VCTCXO
Confidential
Cell
RX
Duplexer
Isolator
Antenna
Cell TX
Power
Diplexer
PCS TX
Isolator
Duplexer
PCS
RX
CDMA
BB Filter
BB AMP
To BB
CDMA
BB Filters
BB AMP
VHF PLL
2 ÷
367.2 MHz
Reference Clock
To Base-Band
AFC
Issue 1 06/2003