共查询到20条相似文献,搜索用时 93 毫秒
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本文对某一微波功率模块(MPM)用小型化行波管的直角弯头输入结构进行了降低结构高度的研究。新直角弯头输入结构的高度从原结构的28.4mm减小到15.8mm,输入匹配性能也得到同步提升。MPM的宽度可由此减小12.6mm,因此可获得更高的集成度。 相似文献
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郝保良魏义学陈永利李冬凤瞿波蔡军郑丽赵长江 《真空电子技术》2018,(1):10-18
本文介绍了微波功率行波管的典型应用、可靠性增长及主要工作原理,分析了毫米波和THz行波管、高峰值功率行波管、宽带行波管、微波功率模块、多频段一体化行波管、空间行波管及卫星通信行波管的主要现状。从国内外最新的研究计划出发,归纳了更高频率、更高效率、更大功率、宽频带和小型化、模块化、低成本方向及冷阴极应用的技术发展趋势,介绍了宽带雷达、通信和电子战等应用需求。 相似文献
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引线瓷封件是多级降压收集极的重要部件之一,也是最容易被忽略的部件。小型化多级降压收集极是目前行波管小型化的设计重点,而引线瓷封件的小型化对收集极的小型化影响较大。本文对收集极引线瓷封件的小型化设计进行了研究。 相似文献
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Ka波段连续波500W螺旋线行波管研究 总被引:1,自引:1,他引:0
Ka波段螺旋线大功率行波管在大容量的通信系统中具有重要作用,本文介绍了目前大功率连续波螺旋线行波管的现状,对相关技术进行了分析。通过对高频结构的互作用分析、热分析、多级降压收集极等分析,设计了一个Ka波段连续波500 W行波管的螺旋线互作用结构,计算机模拟结果表明可以满足设计要求。 相似文献
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应用于毫米波系统的行波管电压低、效率高,本文简要分析了低电压、高脉冲输出功率Ka波段行波管关键技术,介绍了设计方案和制管结果。行波管在17 kV工作电压脉冲输出功率600 W。 相似文献
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Shunkang Liu 《Journal of Infrared, Millimeter and Terahertz Waves》1997,18(6):1317-1321
Backward wave oscillations are easy occurred in high power helix millimeter wave traveling wave tubes (MMW TWT’s), owing to larger ka value and higher operating voltage. The start current of backward wave is calculated for helix TWT in Ka band. It is shown that start current will increase by used a tapered helix. Backward wave oscillations can be suppressed in tube. The design method of the tapered helix is given in this paper. 相似文献
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Shunkang Liu 《Journal of Infrared, Millimeter and Terahertz Waves》1999,20(5):859-865
Backward wave oscillation can be troublesome in high power helix TWT, especially millimeter wave helix traveling wave tubes (MMW HTWT's). To suppress these oscillations, start-oscillation current of backward wave has to know when MMW HTWT's are designed. A fast computation of the start-oscillation current for MMW HTWT's is presented. It is shown that the computed values are agreed with the experimental results in Ka band. 相似文献
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The market situation of space traveling wave tubes (TWTs) over the last four years is reviewed. It is exemplified that space TWTs are not only the key components for the traditional frequency ranges in C- and Ku-band, but also for new satellite communication systems as digital audio broadcasting in the lower L- and S-band frequency range and the planned, new global multimedia systems. There, Thomson Tubes Electroniques GmbH (TTEG) has developed the new family of Ka band TWTs, which provide the large bandwidth and power requirements for high data rate transmission. TTEG is also developing 60-GHz TWTs as RF intersatellite-links for global satellite systems. The promising results of the 560 g lightweight, 25 W, broadband helix TWT are mainly reported and the requirements compared with those for a parallel 60 W 60-GHz interdigital line TWT development 相似文献
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Zhan-Liang Wang Xianbao Shi Yu-Bin Gong Yan-Yu Wei Zhao-Yun Duan Xiaogang Su Huarong Gong Jinjun Feng Hua Huang 《Journal of Infrared, Millimeter and Terahertz Waves》2016,37(6):561-571
This paper reports a Ka-band sheet beam traveling wave tube (TWT) focused by a 0.2 T closed periodic cusped magnet (PCM) system. The TWT with one section of staggered double-vane slow-wave structure (SWS) is driven by a 0.8-A sheet beam with rectangular cross-sectional area of 3.2 mm?×?0.6 mm. This sheet beam TWT can produce 100 W output power, and the 3 dB band is 33–38.5 GHz. In order to improve the output power, an optimized sheet beam TWT with two sections of SWSs focused by a novel closed PCM system is proposed. The new closed PCM system is with annular magnetic blocks and can be fabricated and adjusted easily. The simulation shows that the optimized sheet beam TWT can produce 2000 W output power and the 3 dB band ranging from 33 to 40 GHz. 相似文献
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介绍了一种Ka波段行波管发射机的技术参数及设计方法,主要叙述了发射机的构成:高压电源、高压隔离组件、控保电路及高频系统,并针对Ka波段发射机在精密跟踪雷达方面的应用,就其小体积、高电压情况下的电源模块化设计,高压绝缘设计作了详细说明。 相似文献
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通过对批量生产的应用于电子对抗系统国产行波管的可靠性数据的收集、分析,得出其可靠性水平.依据收集到的可靠性数据,通过回归分析建立宽带行波管可靠性预计模型.比较所建立的宽带行波管预计模型与299C中行波管可靠性预计模型的基本故障.列举出宽带行波管主要故障模式,并初步分析其故障机理. 相似文献