Motorola MTR2000 T5544 Instruction / Field Service Manual page 58

EXCITER MODULE
FROM
TX ENABLE
STATION
CONTROL
MODULE
SPI BUS
B
2.1 MHz REF
A SYNTHESIZER/
VCO
VCO & REF MOD AUDIO
MODULATED RF
MODULATED RF
RF SWITCH
CIRCUITRY
100 W POWER AMPLIFIER (<600 MHz)
POWER
SPI BUS
B
CONTROL
CIRCUITRY
10 W
INTERMEDIATE
POWER AMP
75 W POWER AMPLIFIER (800 & 900 MHz)
POWER
SPI BUS
B
CONTROL
CIRCUITRY
1.5 W
15 W
PRE-DRIVER DRIVER
30 W & 40 W POWER AMPLIFIER
POWER
SPI BUS
B
CONTROL
CIRCUITRY
15 W 50 W
INTERMEDIATE BUTTERFLY
MODULE
POWER AMP
PA ENABLE
CIRCULATOR
LOW-PASS
DUAL
FILTER/
DEVICE
DIRECTIONAL
MODULE
COUPLER
50 OHM
LOAD
CIRCULATOR
LOW-PASS
FINAL
FILTER/
MODULE
DIRECTIONAL
COUPLER
50 OHM
LOAD
LOW-PASS
TWO CIRCULATORS
FILTER/
OR
OR
DIRECTIONAL
COUPLER
50 OHM 50 OHM
LOAD LOAD
Figure 3. MTR2000 Station Functional Block Di-
68P81096E36-H
06/28/05
Description
TRANSMIT
ANTENNA
agram (Sheet 2 of 2)
15