User's Manual

APPLICANT: MOTOROLA EQUIPMENT TYPE: ABZ89FC5812
User / Operational Manual
Functional Description / Operation of Modules and Interconnect (Draft)
EXHIBIT D1-6
Power Amplifier Module Overview
The power amplifier (PA) module is a forced convection cooled RF power amplifier that operates to the following
electrical performance specifications:
- RF Gain: 42 dB
- Input Return Loss: 10 dB
- Max Current Draw: 17.4 Amps
- Rated Average Power Out: 100 Watt
- Rated Peak Power Out: 200 Watt
- Supply Voltage: 29 Volts DC
- Operational Frequency Range: 746 MHz to 870 MHz
The Power Amplifier is comprised of six internal modules. These are described briefly in the following paragraphs.
1. The Core Board provides the following functionality:
- Routes DC to the Converter and Driver Boards
- Routes RF to the Driver Board
- Provides gain and FB power control
- Provides for diagnostic sensors
- Provides for intermediate voltages used by itself and other modules in the PA
- Provides the PA’s digital interface to the rest of the Base Radio
- Provides for cooling measures control
- Provides for control of subordinate modules
2. The Power Converter Board provides the following functionality:
- Provides 29 Volts DC and an intermediate voltage to the Distribution Board
3. The Driver Amplifier Board provides the following functionality:
- Provides the first RF gain stage of the PA
- Provides supporting bias circuits for the Driver Amplifier
4. The Final Amplifier Board provides the following functionality:
- Provides the second RF gain stage of the PA (parallel stage)
- Provides supporting bias circuits for the Final Amplifier
- Provides for RF power splitting
- Provides for RF power combining
- Provides diagnostics