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 1-1GENERAL DESCRIPTION1-1. INTRODUCTIONThis manual contains information and procedures for installation, operation, and maintenance ofPowerwave’s G3S-800-150 multicarrier cellular amplifier. The manual is organized into sixsections as follows:Section 1. General DescriptionSection 2. InstallationSection 3. Operating InstructionsSection 4. Principles of OperationSection 5. MaintenanceSection 6. Troubleshooting1-2. GENERAL DESCRIPTIONThe G3S-800-150 (see figure 1-1) is a linear, feed-forward power amplifier that operates in the 25MHz frequency band from 869 MHz to 894 MHz. The amplifier can simultaneously transmitmultiple frequencies, with better than -65 dBc third order intermodulation distortion (IMD). It isdesigned for use in an amplifier system that is modular in design, and is ideally suited for use inAMPS/TDMA/CDMA base stations. When used in a subrack employing two G3S-800-150amplifiers, the system offers up to 270 watts output. The plug-in Model G3S-800-150 amplifiermodules can each provide 150 watts of power and function completely independently of eachother. The amplifier modules are designed for parallel operation to produce high peak poweroutput and backup redundancy for remote applications. All solid-state, the system is designed toprovide trouble-free operation with minimum maintenance. The system's modular construction andunique and highly effective LED-based operational status and fault indicators help minimizedowntime. The turn-on and turn-off sequences of voltages are fully automatic, as is overloadprotection and recycling. Inadvertent operator damage from front panel manipulation is virtuallyimpossible.Each amplifier module has a status connector that allows the host system to monitor the amplifiermodule performance. The front panel of each amplifier module has unit level status/fault indicatorsand an RF on/off/reset switch. Primary power for the amplifier is +27 Vdc. Cooling for eachplug-in amplifier module is provided by four fans, two mounted on the front and two on the rear ofthe module. The fans draw outside air through the front of the module and exhaust hot air outthrough the rear of the module.1-3. FUNCTIONAL AND PHYSICAL SPECIFICATIONSFunctional and physical specifications for the amplifier are listed in table 1-2.1-4. EQUIPMENT CHANGESPowerwave Technologies, Inc. reserves the right to make minor changes to the equipment,including but not necessarily limited to component substitution and circuitry changes. Changes thatimpact this manual may subsequently be incorporated in a later revision of this manual.Section1
044-05073 Rev. A 1-21-5. ORDERING INFORMATIONTable 1-1 following gives the part numbers and descriptions to be used when ordering either anentire amplifier or replacement fans.Table 1-1. Major Amplifier ComponentsMODEL NUMBER DESCRIPTIONG3S-800-150 150 W 869-894 MHzMCPA Module.800-00972-001 Front fan assembly800-00972-002 Rear fan assembly.Table 1-2. G3S-800-150 Multicarrier Cellular Amplifier Functional SpecificationsFrequency Range 869-894 MHz (25 MHz Bandwidth)Total Maximum Input Power -6 dBmTotal Output Power 150 W typical (1 Module)Intermodulation Distortionand In-Band Spurious: -65 dBc (Min) @ +24 to +28 Vdc @ 150 Watts-62 dBc (Max) @ +21.7 to +24 VdcRF Gain at 880 MHz 58 dBGain Flatness: ± 0.7 dB @ 27 Vdc ±1 VdcGain Variation Over Temperature: ±0.3 dB from 23 to 30 VdcOutput Protection: Mismatch ProtectedInput Port Return Loss: -16 dB (Min)Second Harmonics: -13 dBm (Max)Out of Band Spurious: Better than -60 dBc, +24 Vdc to +28 VdcDuty Cycle: ContinuousDC Input Power: +27 Vdc ± 1 Vdc, 60 Amps Max @ 150 WattsOperational +21.7 Vdc to 30 VdcOperating 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 ConnectorStatus / Alarm / Control / DC InputConnectors: 21-Pin D-Subminiature Combo ConnectorDimensions: 5.22” High, 17.00” Wide, 20.44” Deep (Including handles, rearfans)
044-05073 Rev. A 1-3

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