High-frequency coaxial input coupler including a transmission window that couples a waveguide to an acceleration cavity

Patent metadata

Field	Value
Publication number	US-12580287-B2
Application number	US-202318462944-A
Country	US
Kind code	B2
Filing date	Sep 7, 2023
Priority date	Mar 10, 2021
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

According to one embodiment, an high-frequency input coupler installed between a waveguide and an acceleration cavity to input high-frequency waves from the waveguide to the acceleration cavity, a coaxial waveguide conversion unit includes a high-frequency transmission window structure connection unit that connects the high-frequency transmission window structure and an inner conductor connection unit that connects an inner conductor which includes an inner conductor support on a side of the inner conductor connection unit, and the high-frequency input coupler includes an electrically connectable and deformable buffer between the inner conductor support and the inner conductor connection unit.

First claim

What is claimed is:

1 . A high-frequency input coupler installed between a waveguide and an acceleration cavity to input high-frequency waves from the waveguide to the acceleration cavity, the coupler comprising:
an inner conductor, an outer conductor provided around an outer circumference of the inner conductor, and a high-frequency transmission window structure including a high-frequency transmission window and a coaxial waveguide conversion unit connected to the waveguide, wherein the coaxial waveguide conversion unit includes a high-frequency transmission window structure connection unit that connects the high-frequency transmission window structure and an inner conductor connection unit that connects the inner conductor, the inner conductor includes an inner conductor support on a side of the inner conductor connection unit, the inner conductor connection unit includes a space in which the inner conductor support is placed, the high-frequency input coupler comprises an electrically connectable and deformable buffer between the inner conductor support and the inner conductor connection unit, and wherein the buffer has an annular shape formed along an outer circumferential edge of the inner conductor support and includes a bend portion between an inner circumferential edge portion fixed to the inner conductor support and an outer circumferential edge portion fixed to the inner conductor connection unit.

2 . A waveguiding apparatus, comprising:
the high-frequency input coupler of claim 1 ; and the waveguide.

3 . The high-frequency input coupler of claim 1 , wherein two bend portions each identical to the bend portion are provided in a radial direction.

4 . The high-frequency input coupler of claim 3 , wherein the two bend portions are bent in directions different from each other.

Assignees

• Canon Electron Tubes & Devices Co Ltd

Inventors

• Takahashi Hideharu

Classifications

• H01J23/44

  Rod-type coupling devices (H01J23/46, H01J23/48, H01J23/54 take precedence) · CPC title

• H01J23/48

  for linking interaction circuit with coaxial lines; Devices of the coupled helices type (H01J23/46 takes precedence) · CPC title

• H05H7/22

  Details of linear accelerators, e.g. drift tubes (H05H7/02 - H05H7/20 take precedence) · CPC title

• H01P5/103

  Hollow-waveguide/coaxial-line transitions · CPC title

• H01P3/127

  with a circular, elliptic, or parabolic cross-section · CPC title