双排矩形波导慢波结构W波段行波管

王自成; 唐伯俊; 李海强; 田宏; 董芳

doi:10.11884/HPLPB201830.170445

双排矩形波导慢波结构W波段行波管

doi: 10.11884/HPLPB201830.170445

中国科学院电子学研究所, 北京 101400

基金项目:

国家自然科学基金项目 61172016

国家自然科学基金项目 61401430

北京市自然科学基金重点项目 201511232037

详细信息

作者简介:
王自成(1966－)，男，博士，研究员，从事短毫米波与太赫兹器件的研究；wzich_cn@sina.com

中图分类号: TN128
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出版历程
- 收稿日期: 2017-11-08
- 修回日期: 2018-01-09
- 刊出日期: 2018-05-15

W band traveling wave tube based on staggered double rectangular waveguide structure

Institute of Electronics, Chinese Academy of Sciences, Beijing 101400, China

摘要

摘要: 利用CST PIC计算了基于双排矩形波导慢波结构的W波段行波管的注波互作用，在采用10 kV，70 mA的电子注的条件下，在92~97 GHz范围内，输出功率大于35 W，增益大于30 dB，电子效率约为5%。即使在10 kV较低的电压下，双排矩形波导慢波结构的尺寸仍然较大，有利于降低制造难度。提出了一种基于电火花线切割的加工制造工艺，成功制造了双排矩形波导慢波结构部件。在92~97 GHz范围内对所需盒形窗和电子枪进行了计算机模拟，设计、加工了盒形窗和电子枪的相关零件，制造了相关部件。将慢波结构部件和输能窗部件组装起来进行了冷测，驻波比在90~100 GHz范围内小于2.067。
- W波段行波管 /
- 双排矩形波导慢波结构 /
- 盒形窗 /
- PIC模拟
Abstract: Beam-wave interaction for a W band traveling wave tube(TWT) based on staggered double rectangular waveguide structure(SDRWS) is calculated by CST PIC, showing that the TWT has over 35 W output power and over 30 dB gain and about 5% electron efficiency from 92 GHz to 97 GHz on the condition of a 10 kV, 70 mA beam. Even if the beam voltage of 10 kV is relatively low, the sizes of SDRWS still remain relatively large, meaning that SDRWS is in favor of evading the difficulties in manufacturing. A process based on wire electrical discharge machining(wire-EDM) is proposed to manufacture SDRWS for W band TWT, and an SDRWS assembly is successfully obtained. Besides, box-shaped window and electron gun are also simulated by computer, and correspondent parts are manufactured and then put together into assemblies. Then "cold test" is performed on an SDRWS assembly put together with two box-shaped windows, showing that voltage standing wave ratio is lower than 2.067 from 92 GHz to 100 GHz.
- W band traveling wave tube /
- staggered double rectangular waveguide structure /
- box-shaped window /
- PIC simulation

HTML全文

图 1 具有圆形电子注通道的双排矩形波导慢波结构示意图

Figure 1. Schematic illustration of SDRWS with circular beam tunnel

下载: 全尺寸图片幻灯片

图 2 W波段行波管的注-波互作用

Figure 2. Beam-wave interaction simulations for W band TWT

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图 3 W波段双排矩形波导慢波结构制造工艺示意图

Figure 3. Schematic process of W band SDRWS

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图 4 上矩形栅图片和W波段双排矩形波导慢波结构组部件图片

Figure 4. Photos of upper gratings and W band SDRWS assembly

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图 5 W波段盒形窗的模拟模型及计算结果

Figure 5. Simulation model and calculated results of W band box-shaped window

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图 6 与两件盒形窗组件装配在一起的W波段双排矩形波导慢波结构组件图片

Figure 6. Photo of W band SDRWS assembly put together with two box-shaped window assemblies

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图 7 电子枪的MTSS模拟结果及2件电子枪组件图片

Figure 7. Simulated results by MTSS for the electron gun and photos of two electron gun assemblies

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表 1 初步确定的双排矩形波导慢波结构参数

Table 1. Initially selected structural parameters of staggered double rectangular waveguide structure(SDRWS) for W-band traveling wave tube

a/mm	b/mm	p/mm	t/mm	r/mm
2.1	0.8	0.8	0.2	0.22

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表 2 PIC模拟中的输入信号的频率和输入功率

Table 2. Frequencies and input powers of input signals in PIC simulations

ordinal number of runs	frequency/GHz	input power/W
1	92	0.02
2	93	0.02
3	94	0.02
4	95	0.02
5	96	0.02
6	97	0.02
7	98	0.08
8	99	0.32
9	100	1.28

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参考文献(11)

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