Powerwave Technologies 5JS0044 Multi-Channel Power Amplifier User Manual sect 1
Powerwave Technologies Inc Multi-Channel Power Amplifier sect 1
sect 1
044-05073 Rev. A 1-1
GENERAL DESCRIPTION
1-1. INTRODUCTION
This manual contains information and procedures for installation, operation, and maintenance of
Powerwave’s G3S-800-150 multicarrier cellular amplifier. The manual is organized into six
sections as follows:
Section 1. General Description
Section 2. Installation
Section 3. Operating Instructions
Section 4. Principles of Operation
Section 5. Maintenance
Section 6. Troubleshooting
1-2. GENERAL DESCRIPTION
The G3S-800-150 (see figure 1-1) is a linear, feed-forward power amplifier that operates in the 25
MHz frequency band from 869 MHz to 894 MHz. The amplifier can simultaneously transmit
multiple frequencies, with better than -65 dBc third order intermodulation distortion (IMD). It is
designed for use in an amplifier system that is modular in design, and is ideally suited for use in
AMPS/TDMA/CDMA base stations. When used in a subrack employing two G3S-800-150
amplifiers, the system offers up to 270 watts output. The plug-in Model G3S-800-150 amplifier
modules can each provide 150 watts of power and function completely independently of each
other. The amplifier modules are designed for parallel operation to produce high peak power
output and backup redundancy for remote applications. All solid-state, the system is designed to
provide trouble-free operation with minimum maintenance. The system's modular construction and
unique and highly effective LED-based operational status and fault indicators help minimize
downtime. The turn-on and turn-off sequences of voltages are fully automatic, as is overload
protection and recycling. Inadvertent operator damage from front panel manipulation is virtually
impossible.
Each amplifier module has a status connector that allows the host system to monitor the amplifier
module performance. The front panel of each amplifier module has unit level status/fault indicators
and an RF on/off/reset switch. Primary power for the amplifier is +27 Vdc. Cooling for each
plug-in amplifier module is provided by four fans, two mounted on the front and two on the rear of
the module. The fans draw outside air through the front of the module and exhaust hot air out
through the rear of the module.
1-3. FUNCTIONAL AND PHYSICAL SPECIFICATIONS
Functional and physical specifications for the amplifier are listed in table 1-2.
1-4. EQUIPMENT CHANGES
Powerwave Technologies, Inc. reserves the right to make minor changes to the equipment,
including but not necessarily limited to component substitution and circuitry changes. Changes that
impact this manual may subsequently be incorporated in a later revision of this manual.
Section
1
044-05073 Rev. A 1-2
1-5. ORDERING INFORMATION
Table 1-1 following gives the part numbers and descriptions to be used when ordering either an
entire amplifier or replacement fans.
Table 1-1. Major Amplifier Components
MODEL NUMBER DESCRIPTION
G3S-800-150 150 W 869-894 MHz
MCPA Module.
800-00972-001 Front fan assembly
800-00972-002 Rear fan assembly.
Table 1-2. G3S-800-150 Multicarrier Cellular Amplifier Functional Specifications
Frequency Range 869-894 MHz (25 MHz Bandwidth)
Total Maximum Input Power -6 dBm
Total Output Power 150 W typical (1 Module)
Intermodulation Distortion
and In-Band Spurious: -65 dBc (Min) @ +24 to +28 Vdc @ 150 Watts
-62 dBc (Max) @ +21.7 to +24 Vdc
RF Gain at 880 MHz 58 dB
Gain Flatness: ± 0.7 dB @ 27 Vdc ±1 Vdc
Gain Variation Over Temperature: ±0.3 dB from 23 to 30 Vdc
Output Protection: Mismatch Protected
Input Port Return Loss: -16 dB (Min)
Second Harmonics: -13 dBm (Max)
Out of Band Spurious: Better than -60 dBc, +24 Vdc to +28 Vdc
Duty Cycle: Continuous
DC Input Power: +27 Vdc ± 1 Vdc, 60 Amps Max @ 150 Watts
Operational +21.7 Vdc to 30 Vdc
Operating Temperature: 0 ºC. to +50 ºC.
Storage Temperature: -40 ºC. to +85 ºC.
Operating Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
Storage Humidity: 5 % - 95 % Relative Humidity (Noncondensing)
RF Input / Output Connector 2-Pin D-Subminiature Connector
Status / Alarm / Control / DC Input
Connectors: 21-Pin D-Subminiature Combo Connector
Dimensions: 5.22” High, 17.00” Wide, 20.44” Deep (Including handles, rear
fans)
044-05073 Rev. A 1-3