Document Type and Number:
Japanese Patent JPS5060162
Kind Code:
A
Abstract:
A delay line with low reflection attenuation for transit-time tubes, particularly for amplification of millimeter waves, employing a wave-guide having a plurality of successive transverse walls which form line cells, each of which has in addition to a central opening for passage of the electron beam, a coupling slot arranged alternately on opposite sides of the delay line, and provided with a plurality of a cylindrical attenuating bodies which project into the line cells with a penetration depth which varies uniformly along the course of the delay line for providing a reflection-free attenuation, in which such transverse wall are provided with recesses therein in which said attenuating bodies are respectively disposed and mechanically stably retained in operative position therein, such attenuating bodies being disposed diametrically opposite to the corresponding coupling slots and with the longitudinal axis of the cylindrical attenuating bodies and of the delay line being at least approximately parallel to one another.
Application Number:
JP10828474A
Publication Date:
May 23, 1975
Filing Date:
September 19, 1974
Export Citation:
International Classes:
H01J23/24; H01J23/30; H01P9/04; (IPC1-7): H01P9/00; H01J23/24