A power adjustable multi-mode operation traveling wave tube

By designing a slow-wave structure for a multi-mode traveling wave tube, the separate output of high-power and low-power signals was achieved, solving the problems of signal nonlinearity and power requirements of the traveling wave tube in different operating modes, and realizing efficient signal amplification and transmission.

CN115565834BActive Publication Date: 2026-05-19NO 12 RES INST OF CETC
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Patent Information

Application Number
CN202211255924.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-13
Publication Date
2026-05-19
Estimated Expiration
2042-10-13

AI Technical Summary

Technical Problem

Existing traveling wave tubes cannot guarantee signal nonlinearity at high power output, and cannot meet the requirements for signal interference at low power, thus failing to meet the application requirements of different operating modes.

Method used

Design a multi-mode traveling wave tube, which adopts a slow-wave structure with an input end, a first output spiral, a first output end, a second output spiral, and a second output end distributed along the axial direction. By adjusting the pitch and inner diameter, high-power and low-power signals can be separated and output, and amplified and transmitted through different output ports respectively.

Benefits of technology

It achieves both high-power output for interference signals and low-power, linear communication signal transmission under the same operating voltage, meeting the needs of different working scenarios. The electronic efficiency exceeds 25%, and the overall tube efficiency exceeds 60%.

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Abstract

The application discloses a multi-mode working traveling wave tube slow wave structure, which comprises an input end, a first output spiral line, a first output end, a second output spiral line and a second output end which are arranged along an axis in sequence, and the length and the pitch of the first output spiral line and the second output spiral line are such that an input power level greater than a first power is output from the first output end, an input power level less than a second power is output from the second output end, and the first output end output power is greater than the second output end output power. The traveling wave tube comprising the slow wave structure can realize high-power output for use as an interference signal and can also realize small-power communication data transmission with excellent linearity, effectively solving the urgent need of users for multi-mode working scene application of the traveling wave tube. That is, under the same working voltage, only one input signal is given, and two output signals of high-power and small-power high linearity can be realized, meeting the needs of different working scenes.
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