發(fā)布時(shí)間：2019-05-18 13:28

【摘要】：傳統(tǒng)的的微波真空器件由于其結(jié)構(gòu)和工作機(jī)理等原因的影響,在毫米波段的研究上受到了很大的限制。而以電子回旋脈塞的不穩(wěn)定性為機(jī)理的回旋器件,則能夠在這個(gè)頻段產(chǎn)生高增益和高功率的脈沖信號(hào)。所以,由于回旋管具有高功率和高效率等優(yōu)點(diǎn),其在毫米波科學(xué)技術(shù)的領(lǐng)域中擁有了廣闊的發(fā)展前景。毫米波的頻段位于紅外和微波之間,與普通的微波系統(tǒng)相比,毫米波系統(tǒng)易于集成,在軍事和工業(yè)發(fā)展上發(fā)揮著重要作用。近些年以來(lái),回旋管的研究受到國(guó)際上的廣泛關(guān)注,美國(guó)、英國(guó)、德國(guó)、俄羅斯、法國(guó)、日本及瑞士等國(guó)家在回旋管的研究中投入了大量精力,我國(guó)的相關(guān)科研機(jī)構(gòu)也一直在對(duì)其進(jìn)行研究。磁控注入式電子槍是回旋管重要的組成部分,對(duì)磁控電子槍的研究也是回旋管設(shè)計(jì)的關(guān)鍵技術(shù)之一。本文著重對(duì)磁控注入式電子槍進(jìn)行了研究,并用粒子模擬軟件對(duì)其進(jìn)行仿真優(yōu)化。并對(duì)影響電子注性能的主要參數(shù)進(jìn)行了詳細(xì)分析計(jì)算,為電子槍的設(shè)計(jì)提供了理論依據(jù)。本論文主要內(nèi)容如下:1、從電動(dòng)力學(xué)和電磁場(chǎng)的基本理論出發(fā),詳細(xì)闡述了電子光學(xué)系統(tǒng)的理論基礎(chǔ)以及計(jì)算方法。2、具體探討了磁控注式入電子槍的基本工作原理,并對(duì)電子槍系統(tǒng)作了詳細(xì)的分析。介紹了電子槍的設(shè)計(jì)思路與優(yōu)化方法,對(duì)磁控電子槍的初始設(shè)計(jì)進(jìn)行了詳細(xì)的討論。3、對(duì)電子槍進(jìn)行仿真計(jì)算和優(yōu)化,成功設(shè)計(jì)出了用于W波段和D波段回旋管的單陽(yáng)極磁控注入式電子槍,在此基礎(chǔ)上,分析電參數(shù)與結(jié)構(gòu)參數(shù)對(duì)電子注性能的影響,例如電磁場(chǎng)分布和電子槍的電極結(jié)構(gòu)對(duì)電子注速度比、速度零散以及引導(dǎo)中心半徑的影響。4、研究了回旋管的收集極系統(tǒng),闡述了收集極的基本工作原理,分析了精確的磁場(chǎng)計(jì)算對(duì)收集極的影響,最后討論了收集極散焦的實(shí)現(xiàn)方法。
[Abstract]:Due to the influence of its structure and working mechanism, the traditional microwave vacuum devices are limited in the study of millimeter band. The cyclotron device, which is based on the instability of electron cyclotron maser, can generate high gain and high power pulse signals in this frequency band. Therefore, because of the advantages of high power and high efficiency, gyroscope has a broad development prospect in the field of millimeter wave science and technology. The frequency band of millimeter wave is located between infrared and microwave. Compared with ordinary microwave system, millimeter wave system is easy to integrate and plays an important role in military and industrial development. In recent years, the study of gyroscope has attracted extensive attention in the world. The United States, Britain, Germany, Russia, France, Japan, Switzerland and other countries have invested a lot of energy in the study of gyroscope. The relevant scientific research institutions in our country have been studying it all the time. Magnetron injection electron gun is an important part of gyrocyclone, and the research of magnetron electron gun is also one of the key technologies in the design of gyro tube. In this paper, the magnetron injection electron gun is studied and optimized by particle simulation software. The main parameters affecting the performance of electron beam are analyzed and calculated in detail, which provides a theoretical basis for the design of electron gun. The main contents of this paper are as follows: 1. Based on the basic theory of electrodynamics and electromagnetic field, the theoretical basis and calculation method of electron-optical system are described in detail. 2, the basic working principle of magnetron injection electron gun is discussed in detail. The electron gun system is analyzed in detail. The design idea and optimization method of electron gun are introduced, and the initial design of magnetic control electron gun is discussed in detail. 3, the simulation calculation and optimization of electron gun are carried out. A single anode magnetron injection electron gun for W-band and D-band gyroscopes is successfully designed. On this basis, the effects of electrical and structural parameters on the performance of electron beam are analyzed. For example, the influence of electromagnetic field distribution and electrode structure of electron gun on electron beam velocity ratio, velocity dispersion and guiding center radius. 4. The collector system of gyrocyclone is studied, and the basic working principle of collector is expounded. The influence of accurate magnetic field calculation on the collector is analyzed, and the realization method of defocusing of the collector is discussed at last.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TN12

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相關(guān)期刊論文 前1條

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本文編號(hào)：2480046