A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.

A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.

The present invention is a rectangular waveguide providing amplification of an electromagnetic wave via interaction with an electron beam in a linear interaction channel where the electron beam enters the waveguide at a first curved part of the waveguide, traverses the linear interaction channel and exits the waveguide at a second curved part of the waveguide.

A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.

A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.

A millimeter-wave extended interaction device, including: a device body; resonant cavities; electron beam tunnels; an output waveguide; and a coupling hole. The device body includes a shell and a core, and an annular coupling channel is disposed between the shell and the core. The resonant cavities are a set of ring-shaped cavities with a radial height of 2/5, to 3/5, parallel and equally spaced around an axis of the core. The electron beam tunnels are arranged at equal radian intervals and parallel to the axis of the core. The output waveguide is disposed in the middle of the shell and communicates with the annular coupling channel through a coupling hole. The core and the inner surface of the shell are sealed and fixed, and the output waveguide and the shell are sealed and fixed.

A millimeter-wave extended interaction device, including: a device body; resonant cavities; electron beam tunnels; an output waveguide; and a coupling hole. The device body includes a shell and a core, and an annular coupling channel is disposed between the shell and the core. The resonant cavities are a set of ring-shaped cavities with a radial height of 2/5, to 3/5, parallel and equally spaced around an axis of the core. The electron beam tunnels are arranged at equal radian intervals and parallel to the axis of the core. The output waveguide is disposed in the middle of the shell and communicates with the annular coupling channel through a coupling hole. The core and the inner surface of the shell are sealed and fixed, and the output waveguide and the shell are sealed and fixed.

The present invention is a rectangular waveguide providing amplification of an electromagnetic wave via interaction with an electron beam in a linear interaction channel where the electron beam enters the waveguide at a first curved part of the waveguide, traverses the linear interaction channel and exits the waveguide at a second curved part of the waveguide.

The present invention is a rectangular waveguide providing amplification of an electromagnetic wave via interaction with an electron beam in a linear interaction channel where the electron beam enters the waveguide at a first curved part of the waveguide, traverses the linear interaction channel and exits the waveguide at a second curved part of the waveguide.

A millimeter-wave extended interaction device, including: a device body; resonant cavities; electron beam tunnels; an output waveguide; and a coupling hole. The device body includes a shell and a core, and an annular coupling channel is disposed between the shell and the core. The resonant cavities are a set of ring-shaped cavities with a radial height of 2 /5 , to 3/5 , parallel and equally spaced around an axis of the core. The electron beam tunnels are arranged at equal radian intervals and parallel to the axis of the core. The output waveguide is disposed in the middle of the shell and communicates with the annular coupling channel through a coupling hole. The core and the inner surface of the shell are sealed and fixed, and the output waveguide and the shell are sealed and fixed.