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Journals and Conferences
A series of Ka-band Coupled-Cavity Traveling-Wave Tubes (CCTWTs) has been successfully developed, built, and tested at Communications and Power Industries (CPI) in collaboration with the Naval… (More)
The Sheet Beam Klystron (SBK) is characterized by a large drift tube, which allows the use of high beam current at a low voltage, resulting in low beam current density, high efficiency and the… (More)
In this paper we report on a development program aimed at producing a travelling wave tube amplifier with significant gain and power at 220 GHz in a compact and lightweight package. This paper… (More)
A beamstick for demonstration of a 25∶1 aspect ratio, 750 A/cm<sup>2</sup> current density sheet beam for DARPA's HiFIVE project will be described.
A family of 700-W Ka-band Coupled-Cavity Traveling-Wave Tubes (CCTWTs) has been successfully developed, built, and tested at Communications and Power Industries (CPI). These CCTWTs are capable of up… (More)
A permanent magnet structure has been successfully designed and fabricated for the HiFIVE program. The design produces a peak field of 0.75 T within a gap length of 2.5 cm.
Summary form only given. One of the primary in-process failure modes for guns in vacuum electron devices (VEDs) is poor or low emission due to smearing the cathode pores closed during the fabrication… (More)
We report on the design and fabrication of a sheet beam traveling-wave tube (TWT) amplifier being developed under the DARPA HiFIVE program. The device is designed to achieve over 50 W output power at… (More)
A sheet beam traveling-wave tube amplifier is currently being developed under the DARPA HiFIVE program. The device is designed to achieve over 50 W output power at 220 GHz with a power-bandwidth… (More)
Having a proven beam system focused by a periodic permanent magnet structure, rf circuits to achieve 700Watts CW of power amplification at Ka-Band have been designed. These circuit designs have been… (More)