摘要:
An electron beam tube of the type for amplification of RF signals comprising an electron gun, an interaction region within a vacuum, an RF input and an RF output arrangement, the RF output arrangement comprising an output coaxial line and a coaxial divider, wherein the coaxial divider is arranged to divide a signal on the coaxial line into a plurality of signals and wherein the vacuum within the interaction region extends into the coaxial divider.
摘要:
In an output resonant cavity used with a linear electron beam tube such as an IOT, magnetic material is mounted on walls of the cavity and defines annular channels within which coils are located to provide focusing of an electron beam travelling along the axis of a tube located in apertures in the cavity walls. An inner rim locates the electron beam tube with respect to the cavity.
摘要:
An electron beam tube of the type for amplification of RF signals comprising an electron gun, an interaction region within a vacuum, an RF input and an RF output arrangement, the RF output arrangement comprising an output coaxial line and a coaxial divider, wherein the coaxial divider is arranged to divide a signal on the coaxial line into a plurality of signals and wherein the vacuum within the interaction region extends into the coaxial divider.
摘要:
A dielectric material having a low dielectric loss factor for high-frequency use, which comprises a sintered product of silicon nitride chiefly composed of silicon nitride and containing at least oxygen as an impurity component or oxygen as an impurity component and a compound of an element of the Group 3a of periodic table, wherein said sintered product contains aluminum in an amount which is not larger than 2% by weight reckoned as an oxide thereof having relative densities of not smaller than 97% and has a dielectric loss factor at 10 GHz ofnot larger than 5.times.10.sup.-4. The dielectric material has excellent mechanical properties such as large strength and excellent chemical stability, features small dielectric loss factor in high-frequency regions, and is suited for use as a material for high-frequency oscillators, antennas, filters and electronic circuit boards. In particular, those dielectric materials are suited for use as window materials for introducing high frequencies in a high-frequency plasma-generating CVD apparatus, a microwave wave output unit and an oscillator.