Users Manual Part 2

Power Amplifiers in BR-Arch-1 Base Radios
Power Amplifiers in BR-Arch-1 are available in both high and low power versions. High-power PAs in
400 MHz band are available on two different frequency bands. The following table contains a list of all
available PAs in BR-Arch-1 Base Radios.
Table 96: Power Amplifiers in BR-Arch-1 Architecture
MTS Band Power Configuration Frequency Bands
260 MHz low-power 260 MHz – 275 MHz
400 MHz high-power 350 MHz – 379 MHz
380 MHz – 470 MHz
low-power 380 MHz – 470 MHz
800 MHz low-power 806 MHz – 870 MHz
900 MHz low-power 932 MHz – 942 MHz
Figure 181: Low-power PA Functional Block Diagram
PA IN
Forward VVA Splitter
Combiner
Feedback
Coupler
Circulator
Attenuator Reverse VVA
Forward/
Reverse
Coupler
Attenuator
LDM
LFM
LFM
PA OUT
PA Feedback
OUT
PA
Figure 182: High-power PA Functional Block Diagram
PA IN
Forward VVA Splitter
Combiner
Feedback
Coupler
Circulator
Attenuator Reverse VVA
Forward/
Reverse
Coupler
Attenuator
LDM
LFM
LFM
LFM
PA OUT
PA Feedback
OUT
PA
6802800U74-AP
Chapter 10: Base Radio
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