Harmonic gyro traveling wave tube having a multipole field excit

Helical slow-wave circuit assembly with reduced RF losses

Helical slow-wave structure assemblies and fabrication methods

Helical waveguide to rectangular waveguide coupler

Helix traveling wave tubes with reduced gain variation

Helix traveling wave tubes with resonant loss

Helix travelling-wave tube with a maximum small signal gain at t

Helix type traveling wave tube

Helix type traveling wave tube structure with supporting rods co

Helix type traveling-wave tubes with auxiliary selective shieldi

Helix type travelling-wave tube amplifier

High brightness electron accelerator

High efficiency collector for traveling wave tubes with high per

High energy accelerator

High field gradient particle accelerator

High field pulsed microwiggler comprising a conductive tube with

High frequency amplifier

High frequency resonator

High frequency tube apparatus

High frequency vacuum tube with closely spaced cathode and non-e