S-Band 50W Power Amplifier

Product Features

• 2100 MHz – 2300 MHz Broadband Amplifier
• High  linearity  PA  provides  50  Watt output for broadcast of digital waveforms
• Single or Multiple  OFDM,  QAM  or  QPSK/BPSK  channel support
• Fully  protected  against  input  overdrive,  temperature  and output load VSWR conditions
• Remote control and self-monitoring via RS485 interface
• HPA Monitor GUI software available for local PC control via RS232 interface (CD included)
• Integrated AC/DC power supply

Product Description

The DMPA 2200 is designed to operate as a final amplification stage for a terrestrial S-band transmitter or repeater system. It amplifies an input S-Band signal to a digital average output power level of 50 Watts while maintaining its linear characteristics. The DMPA 2200 architecture is an LDMOS based solid-state design operating in Class A/AB linear mode over a frequency range of 2100 MHz to 2300 MHz. The amplifier is fully protected against input overdrive, overheating and output load VSWR conditions. The protection circuits are all self-correction, allowing the amplifier to be restored to its normal operating state upon removal of the fault condition. The DMPA 2200 incorporates an internal automatic self-levelling loop to maintain constant gain over the life of the equipment. The automatic level control (ALC) circuit will compensate for the input signal level variations and the gain variations caused by changes in temperature as well as for the gain change due to devices ageing. Depending on the application, the amplifier can be configured to operate in AGC mode, maintaining a constant
gain value.

The amplifier’s operational parameters are monitored and controlled by an embedded system controller that can be accessed from the RS232 interface using the GUI software provided. The DMPA 2200 is a field-replaceable system component that includes an integrated AC/DC power supply and is designed for indoor installation. All of the amplifier’s components are enclosed in a standard 19” rack mount chassis, occupying only “2RU” of cabinet space. The amplifier is forced air-cooled using four high-performance fans, which are installed on the amplifier enclosure front panel.

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