Microwave Journal

High Power TWT Boosts Performance for DBS Market

July 14, 2015

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A new high efficiency traveling wave tube (TWT) from CPI Microwave’s Power Products division (CPI MPP) boosts power and efficiency in the DBS uplink band, which spans 17.3 to 18.4 GHz. The VTU-6398D9C provides 1250 watts peak (625 watts average) output power in a conduction-cooled amplifier measuring 16" × 2.8" × 4" and weighing just 9.7 lbs. Maximum prime power is 2500 watts. The unit has a coaxial input and waveguide output and focus electrode (FE) control line for turn on. The typical helix voltage is 15 kV, filament voltage is 6.3 V and filament current 1.4 A. Collector voltage 1 is typically 52 percent, and collector voltage 2 is 13 percent.

This VTU-6398D9C addresses the demand for higher power helix TWTs for the DBS uplink. The VTU-6398D9C can be customized to address unique requirements, including the mechanical configuration, electrical and RF connections, and dual-stage depressed collector.

CPI MPP has been a leader in vacuum electron device technology for over 50 years and is known for engineering expertise, reliable products and performance.

Communications &
Power Industries LLC
Microwave Power Products Division
Palo Alto, Calif.