An ultra-broadband planar double-injection slow-wave structure

Abstract

The invention discloses an ultra-broadband planar double-injection slow wave structure, which comprises a planar metal slow wave line, a metal shell and two dielectric support rods. Curved metal wires; extension sections are arranged on two opposite sides of the inner layer of the metal casing, and openings are arranged between two adjacent extension sections; two dielectric support rods are respectively fixed on the inner layer and the inner layer on both sides of the metal casing Between the outer layers, part of the side of the dielectric support rod is exposed from the opening between the extension sections, and is in surface contact with the curved metal wire of the planar metal slow wave line, and the planar metal slow wave line is clamped, so that the planar metal slow wave line Suspended in the inner cavity of the metal shell, each extension section of each side of the inner layer respectively extends into the corresponding opening of the plane metal slow wave line facing the side. The invention can reduce the dispersion characteristic and improve the coupling impedance under the premise of ensuring a large bandwidth.

Description

Technical field [0001] The invention belongs to the technical field of strip-beam traveling wave tube slow wave systems, and more specifically, relates to an ultra-wideband planar dual-beam slow wave structure. Background technique [0002] As a kind of microwave power device, traveling wave tube has a very wide range of applications. For different application methods, traveling wave tubes have different characteristics. Generally speaking, the advantages of a traveling wave tube include bandwidth, high power, high gain, high efficiency, large gain, and long life. However, in most cases, a traveling wave tube cannot have all the advantages at the same time. Rather, traveling wave tubes with different advantages are applied to different fields. [0003] The slow-wave structure is a device that strengthens the interaction between moving electrons and electromagnetic fields in traveling-wave electronic devices, so that the energy of the electron flow is more effectively converted int...

AI Technical Summary

Problems solved by technology

[0004] The traditional planar slow wave structure includes microstrip slow wave structure and strip slow wave structure, in which the electric field energy of the microstrip slow wave structure is mainly concentrated in its dielectric substrate, and with the decrease of the thickness of the dielectric substrate and the increase of its dielectric constant It is more and more obvious that there are disadvantages such as poor transmission characteristics and narrow bandwidth; while the dispersion of the banded slow wave structure has a large correlation with many structural parameters, and the dispersion is usually strong under the limitations of the existing processing conditions.

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