Small all-metal slow wave device

Abstract

The invention discloses a small all-metal slow wave device for a traveling wave tube or backward wave tube which works at a centimeter wave band or a millimeter wave band in the technical field of vacuum electronics. The small all-metal slow wave device comprises a cylindrical metallic wave conductor and annular sheet type metallic electric resonance pieces arranged inside the wave conductor at intervals, wherein the inner diameter of the cylindrical metallic wave conductor is not larger than one third of the free space wavelength of an electromagnetic wave working at a center frequency, an electron beam channel is formed in the middle of each annular sheet type metallic electric resonance piece, and two auricle-shaped through holes are symmetrically formed in the annular sheet body of each resonance piece. Due to the fact that the two auricle-shaped through holes generating electric resonance are symmetrically formed in the annular sheet body of each resonance piece, electromagnetism intercoupling is effectively eliminated, and only the electric resonance generated by electric dipoles exists. Taking a slow wave device working at the S waveband as an example, the cross section of the all-metal slow wave device is only 35%-50% that of a traditional coupled cavity traveling wave tube. Thus, the all-metal slow wave device has the advantages of being small in size, simple in structure, high in power capacity, output power and interaction efficiency, capable of being produced in an industrialized mode easily and the like.

Description

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AI Technical Summary

Benefits of technology

This patented technology uses a special type of material called metallic helix or spiraling wires inside a circle sheath. These materials have specific properties such as being able to absorb waves without generating unwanted signals like radioactive rays. They can be used alone or together to enhance certain aspects of lightwave devices' performance. By placing these components within this space around the entirety of one side of the core, they eliminate interference from other sources of radiation. Additionally, there is no longer any magnetic fields created during operation due to their symmetry design, which further improves the overall effectiveness of the device. Overall, this new method provides technical benefits over existing methods.

Problems solved by technology

This patents discusses different ways for improving the performance and efficiency at reducing the sizes of compact and efficient vacuumspace traveling wavelength tubular transistors called travelling wave tubings. These techniques aimed towards enhancing their ability to efficiently transmit signals without being bulky and heavyweight. They were developed through researchers' efforts over decades ago when studying these technical feations related to this new technique.

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