Twisted waveguide combination type quasi-plane ridge waveguide folded waveguide

A folded waveguide and twisted waveguide technology, applied in the direction of traveling wave tubes, circuit components of transit time electron tubes, etc., can solve the relative bandwidth limitation of folded waveguide traveling wave tubes, etc., achieve electron beam energy broadening, ensure processing accuracy, The effect of reducing the processing cost

Active Publication Date: 2016-11-09
北京中科航发科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This imposes a severe limitation on the relative bandwidth of the folded waveguide TWT

Method used

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  • Twisted waveguide combination type quasi-plane ridge waveguide folded waveguide
  • Twisted waveguide combination type quasi-plane ridge waveguide folded waveguide
  • Twisted waveguide combination type quasi-plane ridge waveguide folded waveguide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-4 shown.

[0029] A twisted waveguide combined quasi-planar ridge waveguide folded waveguide, including at least five shortest waveguide periodic structures and input and output waveguides 1 sequentially connected and repeated along the Z-axis direction. Two adjacent shortest periodic waveguide structures are directly connected, and each shortest periodic waveguide structure includes at least two U-shaped bend waveguides 4 located on both sides of the Y-axis, the notch of the U-shaped curved waveguide faces the Y-axis, and the same shortest periodic waveguide structure The two U-bend waveguides 4 inside are connected by a waveguide segment structure, and one end of one U-bend waveguide 4 is connected to one end of another U-bend waveguide 4 by a waveguide segment structure, and each of the waveguide segment structures includes a The waveguide section 2 located on the Y axis and two twisted waveguide sections 5 located on both sides of the waveguide se...

Embodiment 2

[0040] Such as Figure 5 shown.

[0041] Compared with implementation example 1, the only difference is:

[0042] All the U-bend waveguides 4 here are E-plane U-bend waveguides 4 . In each shortest waveguide periodic structure, every two twisted waveguides are directly connected to each other to form a group. The two groups of twisted waveguides are not directly connected to each other. Specifically, two adjacent shortest periodic waveguide structures are directly connected; each shortest periodic waveguide structure includes at least two U-shaped curved waveguides 4 located on both sides of the Y-axis, U-shaped The notch of the curved waveguide faces the Y axis, and the two U-shaped curved waveguides 4 in the same shortest waveguide period structure are connected by a waveguide section structure, and one end of one U-shaped curved waveguide 4 is connected to one end of the other U-shaped curved waveguide 4. The waveguide segment structures are connected, and each of the wa...

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PUM

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Abstract

The invention discloses a twisted waveguide combination type quasi-plane ridge waveguide folded waveguide. The folded waveguide includes at least two minimum-length waveguide period structures and input and output waveguides which are successively communicated in the Z-axis direction. The folded waveguide is constituted by a plurality of U-shaped waveguide bend, twisted waveguide segments and straight waveguides. When the folded waveguide is used in linear electromagnetic wave vacuum devices such as a traveling wave tube, compared with traditional folded waveguides, according to the invention, the folded waveguide herein overcomes the presence of 180 degrees difference brought by the U-shaped waveguide bend when an electron beam passes through a traditional slow wave structure and is more conductive to broadening working bandwidth of an electromagnetic wave source. The quasi-plane structure enables the installation of all electromagnetic wave structures on a pedestal, is integratedly completed by adopting common numerical control milling machines so as to guarantee processing precision and reduce processing cost. The folded waveguide can realize compact delay line of all kinds of waveguides, single ridge waveguides or double ridge waveguides, especially slow wave structures such as compact traveling wave tube amplifiers.

Description

technical field [0001] The invention relates to an electromagnetic wave transmission line. Specifically, it relates to a compact twisted waveguide combined quasi-planar ridge waveguide folded waveguide for signal delay or slow wave structure of electromagnetic wave source. Background technique [0002] The first important application of folded transmission lines was as a signal delay line, used for signal delay in systems such as radar. A second important application of folded transmission lines is as a slow wave structure in traveling wave tube amplifiers. At this time, the electron beam propagates along a certain straight electron channel, while the electromagnetic wave propagates along the bent transmission line. Although the phase velocity of the electromagnetic wave propagating in the bent transmission line is very fast, which can be close to the speed of light, or even greater than the speed of light, but in the straight electron channel, the phase velocity of the el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/24H01J25/34
CPCH01J23/24H01J25/34
Inventor 王清源
Owner 北京中科航发科技发展有限公司
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