發(fā)布時間：2019-05-15 21:31

【摘要】：速調管作為真空電子器件的一種,憑借著自身高功率、高增益、高效率、寬帶寬等特點,在雷達導航、探測輻照、微波通信、電視廣播、空間探測等領域都具有廣泛的應用。隨著速調管理論基礎研究的發(fā)展,分布作用技術、輸出腔加載濾波器技術、參差調諧技術等先進技術的應用,速調管正在向著更大功率、更寬帶寬、更高穩(wěn)定性方面發(fā)展,也在用技術指標的不斷提高推動著這些行業(yè)前進。速調管根據(jù)電子注數(shù)目劃分為單注速調管和多注速調管。多注速調管由于在降低電壓、展寬帶寬等方面的優(yōu)勢,這幾年得到迅速發(fā)展和應用。高頻系統(tǒng)和輸入輸出系統(tǒng)作為多注速調管的重要組成部分,其結構和特性對整管的輸出功率、效率、帶寬和增益都有決定性的影響。本文結合實際制管需求,圍繞著在200kW峰值功率電平上實現(xiàn)500MHz輸出帶寬的技術指標,開展了一系列的研究實驗工作,并最終制作樣管進行了測試。本論文的主要工作:以C波段基次模式的矩形諧振腔為研究對象,以HFSS三維電磁場仿真軟件為工具,給出了工作模式的場分布、諧振頻率及特性阻抗值,分析了諧振腔體積、電子數(shù)目、間隙距離、端頭面積對諧振頻率及特性阻抗值的影響,得出了C波段基次模式矩形諧振腔的最優(yōu)結構。依據(jù)C波段基次模式矩形諧振腔的優(yōu)化規(guī)律,利用計算機模擬技術,分別對TM210和TM220模式的矩形諧振腔進行了結構尺寸設計。分析要實現(xiàn)的指標參數(shù),結合現(xiàn)有工藝水平、研發(fā)周期,選定工作模式及諧振腔尺寸。利用分布作用腔技術和濾波器加載技術,在計算機模擬的幫助下實現(xiàn)500MHz的輸出帶寬,并在氧化鈹輸出窗的保障下對200kW的微波能量進行輸出。運用小信號和大信號程序模擬確定諧振腔數(shù)目、諧振頻率、品質因數(shù)等參數(shù)實現(xiàn)群聚帶寬。以設計和模擬結果指導制管,制成整管并測試,將測試結果和設計模擬值進行比較,驗證設計的可行性和準確性。
[Abstract]:Klystron, as a kind of vacuum electronic device, has been widely used in radar navigation, detection and irradiation, microwave communication, television broadcasting, space detection and other fields because of its high power, high gain, high efficiency, wide bandwidth and so on. With the development of klystron theory, the application of distributed action technology, output cavity loading filter technology, staggered tuning technology and other advanced technologies, klystron is developing towards higher power, wider bandwidth and higher stability. It is also promoting these industries with the continuous improvement of technical indicators. Klystron is divided into single-beam klystron and multi-beam klystron according to the number of electron beam. Multi-beam klystron has been developed and applied rapidly in recent years because of its advantages in reducing voltage and broadening bandwidth. As an important part of multi-beam klystron, the structure and characteristics of high frequency system and input / output system have a decisive influence on the output power, efficiency, bandwidth and gain of the whole tube. In this paper, according to the actual requirements of pipe making, around the technical index of realizing 500MHz output bandwidth on 200kW peak power level, a series of research experiments are carried out, and finally the sample tube is tested. The main work of this paper is as follows: taking the rectangular resonator with C-band base mode as the research object and HFSS 3D electromagnetic field simulation software as the tool, the field distribution, resonance frequency and characteristic impedance of the working mode are given, and the volume of the resonator is analyzed. The influence of electron number, gap distance and end area on resonance frequency and characteristic impedance is obtained, and the optimal structure of C-band base mode rectangular resonator is obtained. According to the optimization law of C-band base mode rectangular resonator, the structure size of TM210 and TM220 mode rectangular resonator is designed by using computer simulation technology. The index parameters to be realized are analyzed, combined with the existing process level, R & D cycle, selected working mode and cavity size. Using distributed cavity technology and filter loading technology, the output bandwidth of 500MHz is realized with the help of computer simulation, and the microwave energy of 200kW is output under the guarantee of beryllium oxide output window. Small signal and large signal program are used to simulate and determine the number of resonators, resonant frequency, quality factor and other parameters to realize the clustering bandwidth. The design and simulation results are used to guide the pipe making, and the whole pipe is made and tested. The test results are compared with the design simulation values to verify the feasibility and accuracy of the design.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN122
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本文編號：2477777