Tx System Block Diagram - Nokia RH-57 Series Troubleshooting Manual

Hide thumbs Also See for RH-57 Series:
Table of Contents

Advertisement

Nokia Customer Care

Tx System Block Diagram

Note: See the Schematics chapter for a 2112 transmitter schematic.
BB I LPF
I
I
I
VHF LO
VHF LO
VHF LO
VHF LO
From
From
From
From
÷2/÷4
÷2/÷4
÷2/÷4
÷2/÷4
Baseband
Baseband
Baseband
Baseband
90º
90º
90º
90º
457.2MHz
Q
Q
Q
Issue 1 07/2004
IQ Modulator
IF VGA
(IF AGC PDM)
0º 0º
90º
90º
90º
1052.61-107757MHz
©2004 Nokia Corporation
RF VGA
(RF AGC PDM)
Upconverter
UHF LO
UHF LO
UHF LO
0º 0º
90º
90º
90º
90º
90º
90º
90º
90º
Figure 10: Tx system block diagram
Company Confidential
TP1
Bandpass
PWR Amplifier
Tx SAW
Isolator
Isolator
Isolator
TP2
TP3
Power
Power
Power
Power
To Baseband
To Baseband
To Baseband
Detector
Detector
Detector
Detector
2112 (RH-57)
Troubleshooting - RF
Antenna
Antenna
Antenna
Antenna
TP4
Duplexer
Duplexer
Duplexer
Duplexer
Cell RX
Cell RX
Cell RX
Cell RX
Page 19

Advertisement

Table of Contents
loading

This manual is also suitable for:

2112

Table of Contents