一种新型高性能固态浮动板调制器

介绍了一种用于大功率双模杆控行波管发射机的固态浮动板调制器。分析了其特点和关键技术，针对关键技术提出了几种设计解决方案并从中选择适合本调制器工作的最佳电路。给出了电路的工作原理、电路设计及框图。这种调制技术在现代雷达发射机中具有广泛的应用前景。     

机载PD雷达双模栅控行波管发射机

介绍了双模栅控行波管发射机的特点及其在 PD雷达中的作用 ,阐述了双模栅控行波管的工作原理 ,可更换单元 SRU的组成及设计特点 ,关键技术问题的解决     

新型宽带大功率毫米波回旋行波管发射机

介绍了大功率毫米波雷达和应用于毫米波段微波管的特点.阐述了回旋管的分类和宽带大功率毫米波回旋行波管的工作原理、超导磁场的实现方法和Marx调制器等毫米波雷达发射机中的关键技术.根据回旋行波管放大器的工作特点,给出宽带大功率毫米波发射机系统方案及关键技术的解决方法.     

行波管双模工作;在单一电子对抗系统中获得阻塞式干扰和欺骗性干扰的关键

在连续波功率输出之外还具有一种附加能力的双模工作的概念是在单一电子对抗系统里能体现出阻塞式干扰和欺骗性干扰二者共存的优越性。由行波管实现双模工作的通常方法是用一个双管链,该双管链由一个连续波激励管和一个对脉冲功率输出为低增益透明的(trans-parent)输出管所组成。这种方法可给出连续波和脉冲工作;然而,对这种方法有一些苛刻的限制。利用一个能工作在两种模式的单一高增益行波管实现双模系统工作的新方法,最近已在休斯公司电子动力部作了估算。双模工作的单     

使行波管稳定的选频损耗耦合方法

引言频率高于工作频带时,可能发生干扰振荡的问题仍然是研究现代军用高性能行波管的基本问题。返波振荡看来是双模螺旋线行波管达到较高峰值功率或较大脉升能力的主要阻碍。带边振荡限制了高功率耦合腔行波管可能获得的带宽。在极限功率范围内,利用分布损耗来抑制振荡是很有效的,因为这种方法容许低损耗的慢波线输出段缩短三分之一或更多而不降低效率。其典型例子是,起振电流增大到原来的3～5倍。然而,对于很多双模行波管或高电压行波管这是不够的,因为这些行波管的工作频带     

大功率行波管散热系统模拟

以大功率行波管高频散热系统为原型,利用通用有限元分析软件MSC.Marc对其进行了散热分析,并利用FLU-ENT流体分析软件对原有的水路通道进行了优化设计。经实际测试验证,优化后的设计大大提高了行波管高频散热能力,从而提高了大功率行波管在苛刻环境下的工作可靠性。     

Ka波段双模螺旋线行波管的研制

本文介绍了一种Ka波段双模螺旋线行波管的研制情况,其工作频率范围为32～38GHz,工作电压为9.5kV,低模工作比为70%,峰值输出功率为150～200W;高模工作比为10%,峰值输出功率为300～400W。该Ka波段双模螺旋线行波管具有工作电压低、快速启动、可无环控工作的特点,适用于舷外有源诱饵弹等多种应用场景。     

超宽频带行波管中“纵向导电屏蔽”的运用和工艺

在电子对抗系统中,由于行波管具有特别宽的通频带,因而被广泛采用。甚至可以说,对抗设备的性能和水平往往取决于行波管的性能和水平。目前超宽频带行波管的带宽已经远远超出一个倍频程,可以复盖两个,三个波段以上这亲极其宽广的频率范围。同时,随着超宽带行波管的出现,双模行波管的研制工作也得到了很大的推动。     

一种行波管用增益均衡器的设计

增益均衡器作为行波管的常见附件,对行波管的性能有着明显的影响,是保证行波管宽带等激励工作的重要手段。本文探讨一种大功率行波管用增益均衡器,在满足行波管使用要求的前提下,可以为行波管提供更好的工作环境。     

大功率行波管的现状与发展

概述了国内外大功率行波管的技术现状,对大功率行波管所涉及的关键技术进行了讨论,并介绍了我所在研制X波段脉冲行波管项目的进展情况。     

太赫兹行波管级联倍频器

太赫兹行波管(TWT)级联倍频器基于行波管非线性互作用后电子注中的谐波电流,利用行波管和级联谐波系统组成的倍频器获得电磁波倍频放大。以 W 波段行波管二倍频器为例,对器件的正确性和可行性进行验证。利用微波管模拟器套装(MTSS)软件对设计的倍频器进行三维非线性互作用模拟,结果显示,级联了二次谐波系统的 W 波段行波管倍频器与其他工作在140 GHz~220 GHz 波段的小型太赫兹辐射源相比较,具有优越的性能：谐波输出功率在8 GHz 范围内大于2 W,转换增益大于37 dB。利用 CST公司的粒子工作室软件进行三维粒子注波互作用模拟,结果显示,太赫兹行波管级联倍频器作为潜在的太赫兹源具有高功率、宽频带和高实用化的特点。     

Performance and Application of Slow Wave Circuits for Power TWT in Millimeter Wave

In millimeter wave range, high-power traveling wave tube (TWT) is a key device with broadband and high-power amplification. Basis of comparing traditional and new type slow wave circuits for high-power TWT in MMW, analysis and computation of propagating and RF performance for folded wave circuit are carried out. Theoretic calculation and experimental test show that folded wave circuit is an ideal slow wave structure for broadband and high-power TWT in MMW. There is extreme wide application for the circuit in high-power TWT. This development possesses important consult value to designer for MMW power amplifiers.     

Experimental verification of a computational procedure for the design of TWT-refocuser-MDC systems

A comparison of analytical and experimental results is presented for a high performance dual-mode helix TWT, equipped with multistage depressed collectors (MDC), and operated over conditions ranging from saturation to the linear regime. The computations are carried out with advanced multidimensional computer programs which model the electron beam as a series of disks or rings of charge and follow their trajectories from the RF input of the TWT, through the slow-wave structure, through the refocusing system, to their points of impact in the depressed collector. Twr performance, collector efficiency, and collector current distribution are computed and compared with measurements. Very good agreement is obtained between computed and measured TWT performance and collector efficiencies. The analytical techniques were subsequently applied to the design of a smaller MDC of nearly equal efficiency.     

C波段80 W空间行波管的研制

针对C波段80 W空间行波管进行了优化设计。利用微波管模拟器套装(MTSS)模拟高频慢波结构、注波互作用,运用CST软件模拟了磁系统和输能耦合系统,在输能结构的设计中考虑了微放电效应,设计窗的功率阈值远远大于欧空局8 dB设计要求,降低了管子工作时因微放电而造成损坏的风险。通过MTSS着重优化了高频方案,最终制管完成测试,获得了输出功率大于80 W,效率大于65%,相移小于45°,AM/PM转换系数小于3.5°/dB。     

矩形耦合腔行波管的研究

为了得到高功率、高频率、大带宽的微波源,运用微波仿真软件CST对矩形耦合腔行波管这一新型的大功率器件进行了粒子模拟,得到了23．7kw的峰值输出功率,并且分析了行波管的工作电压与慢波系统的腔体数量对行波管工作特性的影响。结果表明,矩形耦合腔行波管具有较高的功率承载能力。     

微波宽带超大功率合成技术

介绍了系统内微波宽带超大功率合成原理、合成效率分析、微波宽带行波管功率合成的设计方法以及功率合成的幅相不一致性对合成效率的影响,并提出了行波管选择和行波管电源设计的要点和新思路,给出了一种实用的大功率合成系统的原理框图,介绍了一种微波宽带功率合成系统的调试方法,给出了测试数据以及数据分析,为微波宽带功率合成技术应用开辟了一条有意义的途径。     

曲折双脊槽波导高功率宽频带太赫兹行波管

提出一种改进的曲折槽波导—曲折双脊槽波导提高太赫兹行波管的功率和带宽.针对这种新型慢波结构设计了一种新的传输波导作为输入输出能量耦合器.从高频特性仿真结果可以发现曲折双脊槽波导可以提高耦合阻抗并扩展带宽.此外, 粒子仿真结果表明当电子注加载27.4kV电压和0.25A电流时, 新型曲折双脊槽波导行波管在中心频率340GHz处输出功率能达到65.8W同时对应增益27.21dB.因此, 曲折双脊槽波导行波管可以用作宽带和高功率太赫兹辐射源.     

Analytical Exploration of Folded Waveguide Circuit Design for High-power Traveling-wave Tube Amplifier

In this paper, we analyze the design of the folded waveguide slow-wave circuit for traveling-wave tube (TWT) amplifiers. On the basis of physical analyses, an improved physical-based design method that is especially suitable for high-power devices is developed. The proposed method overcomes the difficulties resulting from increased operating voltages and requirements for higher interaction impedance in high-power designs. It enables balancing of dispersion and interaction impedance, which is a flexible approach in addressing operational problems. Furthermore, the essential relationship between the proposed and the existing methods are revealed. A Ka-band folded waveguide TWT amplifier is designed and examined, thereby confirming that the new design method is effective and reliable.     

Analysis of electromagnetic characteristics exhibited by high-power traveling-wave tubes based on a chain of coupled resonators beyond the boundary of the passband of the slow-wave system

The electrodynamic characteristics of a traveling-wave tube (TWT) are numerically and experimentally analyzed beyond the boundary of the transparency band. A high-power three-section TWT with a slow-wave system in the form of a chain of coupled resonators is used as an example to show that, at the low-frequency edge of the operating band, the loaded Q factor of the resonance corresponding to the π-mode oscillations is reduced and that the frequency characteristics do not shift into the low-frequency region.     

94-GHz TWT for military radar applications

For future military radar applications, high frequency, light-weight TWTs become more and more important. To cover this market, Thomson Tubes Electroniques GmbH several years ago started the development of a 94-GHz TWT. The goal of this program was a TWT (double comb delay line structure) in the 94-GHz frequency range with an instantaneous bandwidth greater than 500 MHz (tunable within 1 GHz) and an output peak power greater than 200 W in the center of the band (150 W over the band) for a duty cycle of max. 10%. The basic design and main test results of the 94-GHz TWT are the content of this paper