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Publications (3)2.06 Total impact

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    ABSTRACT: Worldwide demand for high-power amplifiers for digital satellite communication at Ka-band frequencies between 27 and 31 GHz is steadily increasing (2003). Communication and Power Industries (CPI) has developed a 500-W periodic permanent magnet focused coupled-cavity traveling wave tube (TWT) for conduction-cooled amplifier systems, which is being introduced into the commercial satellite communication market. The TWT is capable of greater than 500-MHz instantaneous bandwidth and is cathode voltage tunable from 28.3 to 30 GHz. The TWT may be operated saturated at the 500-W output power level or backed off from saturation in the linear mode. CPI's Satcom Division has integrated the TWT into a conduction-cooled transmitter box suitable for antenna hub-mount applications. The amplifier uses predistortion networks to provide a high degree of linear response when operated in output power back-off mode.
    IEEE Transactions on Electron Devices 06/2005; · 2.06 Impact Factor
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    ABSTRACT: CPI's Millitron HPA overcomes many of the limitations associated with Ka-band transmission. In the past, Ka-band HPAs have been restricted severely by either power or bandwidth limits. Consequently, these HPAs have had the potential to be adversely affected by rain fade, or simply have not had the necessary bandwidth to fulfil many applications. A Millitron HPA provides an unprecedented combination of power and bandwidth. When a linearizer is added, the HPA falls well within specifications for AM/PM conversion, intermodulation and spectral regrowth
    01/2005;
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    ABSTRACT: The paper deals with a CW500 watt Ka-band coupled-cavity TWT for digital satellite communication. The communication and power industries developed a PPM focussed coupled-cavity TWT for conduction cooled amplifier systems. The TWT can be operated at the 500 watt output level or backed off from saturation in the linear mode. The technology advances have been applied to the newly designed CW TWT radar systems.
    Vacuum Electronics, 2003 4th IEEE International Conference on; 06/2003