A 500-W Coupled-Cavity TWT for Ka-Band Communication

Wideband Millimeter Wave Amplification on a Coupled-Cavity Traveling-Wave-Tube Driven by an Impulse Signal

“…4. The double-slot staggered slow-wave circuit known as "Millitron" [8] has been widely used for high power, wideband, millimeter wave power amplifiers because of robustness and low-cost fabrication. The input section which modulates the linear beam consists of 38 cavities.…”

MAGIC3D Simulations of a 500-W Ka-Band Coupled-Cavity Traveling-Wave Tube

“…In this paper, we present the design and simulation of a Ka-band double-slot staggered CCTWT based on CPI's CCTWT [4] by using the 3-D PIC code MAGIC3D in order to investigate and understand the beam dynamics in the CCTWT. We simulated the Ka-band CCTWT in [4] by using similar parameters such as beam voltage, beam current, and slowwave structure dispersion characteristics. MAGIC3D is a 3-D, fully dynamic, and self-consistent PIC code used to simulate plasma-physics problems [15].…”

Space-charge effects in low-energy flat-beam transforms

“…The motivation for this work is to see if an FBT can be applied to future high-power high-frequency vacuum electron devices (VEDs) such as planar traveling-wave tubes (TWTs) [4,5] to help with beam-transport stability limitations. There is increasing interest to make high power (nominally kW to 10s of kW peak power) at high frequencies (nominally Ka-band to W-band, or roughly 30 GHz to 100 GHz), often with large bandwidths (10% or more), with compact vacuum electron devices [6][7][8][9] for radar, remote sensing, communications, and other applications. Reference [10] contains an excellent summary of high-frequency applications requiring higher power than currently available that are driving the development of new higher-frequency, higher-power sources and amplifiers.…”