I. Freidovich, B. Prokofiev, A. Balabanov, A. Yegorov, A. Zakirov, A. Grigoriev
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Waveguide window for a broadband multibeam Ka-band klystron
An RF pillbox-type window for a broadband multibeam Ka-band klystron whose cavities operate in higher mode is described. The window has a thick vacuum-tight barrier made of pyrolitic boron nitride. Its S-parameters are stable in respect of the barrier dielectric permittivity dispersion due to the energy transmission in the TM01-mode of the circular waveguide.