發(fā)布時(shí)間：2018-02-09 19:20

  本文關(guān)鍵詞： 高功率毫米波 準(zhǔn)光傳輸技術(shù) 準(zhǔn)光模式變換器 斜角彎頭 準(zhǔn)光諧振雙工器　出處：《電子科技大學(xué)》2015年博士論文　論文類型：學(xué)位論文

【摘要】：高功率毫米波在定向能武器系統(tǒng)、電子回旋諧振加熱、定向高能武器、材料表面處理等研究領(lǐng)域具有廣泛應(yīng)用。傳統(tǒng)的導(dǎo)波技術(shù)難以滿足這些應(yīng)用系統(tǒng)中高功率、高效率和高純度的傳輸要求。準(zhǔn)光技術(shù)專門研究準(zhǔn)直性好、束半徑大(相對(duì)于導(dǎo)波波長(zhǎng))波束的傳播問題,可以為高功率毫米波的高效傳輸提供新途徑。因此,積極開展基于準(zhǔn)光技術(shù)的高功率毫米波傳輸器件研究對(duì)充分發(fā)揮毫米波源性能、促進(jìn)高功率毫米波的應(yīng)用具有重要意義。本文結(jié)合多個(gè)科研項(xiàng)目的迫切需求,對(duì)高功率毫米波準(zhǔn)光傳輸系統(tǒng)中包括準(zhǔn)光模式變換器、斜角彎頭、準(zhǔn)光諧振雙工器等若干技術(shù)問題進(jìn)行了深入細(xì)致的理論與實(shí)驗(yàn)研究。具體的研究?jī)?nèi)容及工作如下:1.采用幾何光學(xué)理論和波導(dǎo)理論相結(jié)合的方法,對(duì)傳統(tǒng)的Denisov輻射器的設(shè)計(jì)方法進(jìn)行了分析和改進(jìn),提出了針對(duì)相對(duì)低階回旋管壁微擾波導(dǎo)輻射器的相位匹配優(yōu)化技術(shù),提高了對(duì)衛(wèi)星模式的成分的控制能力。同時(shí),為了快速有效地完成對(duì)波導(dǎo)輻射器的性能分析,提出了改進(jìn)型等效電流積分分析方法�；谏鲜隼碚�,編寫相應(yīng)地?cái)?shù)值程序,優(yōu)化設(shè)計(jì)了94GHz、TE5,3模Denisov輻射器,理論計(jì)算結(jié)果表明輸出標(biāo)量高斯含量可達(dá)98.5%。2.運(yùn)用矢量繞射理論對(duì)準(zhǔn)光模式變換器的鏡面系統(tǒng)進(jìn)行了研究與分析,并結(jié)合誤差校正Katsenelenbaum-Semenov算法對(duì)設(shè)計(jì)的Denisov輻射器的后續(xù)鏡面進(jìn)行了設(shè)計(jì)。最終,在輸出窗口處實(shí)現(xiàn)了束腰大小為12mm,標(biāo)量高斯含量為99.52%,矢量高斯含量為95.93%的波束輸出。為了實(shí)驗(yàn)研究準(zhǔn)光模式變換器的性能,對(duì)低功率圓極化模式激勵(lì)技術(shù)進(jìn)行了研究。利用設(shè)計(jì)的模式激勵(lì)器,開展了準(zhǔn)光模式變換器的低功率實(shí)驗(yàn)研究,實(shí)驗(yàn)結(jié)果表明輸出場(chǎng)的標(biāo)量高斯含量為98.6%。3.系統(tǒng)研究了高斯波束與波導(dǎo)混合模式的傳播特性,提出了適用于TE0m(m?1)模的寬頻帶、低損耗高功率斜角彎頭的設(shè)計(jì)方法。根據(jù)這一方法,傳輸模式TE0m(m?1)模被轉(zhuǎn)換成具有高斯傳播特性的混合模式。結(jié)合模匹配技術(shù)和遺傳算法,提出了一種能快速自適應(yīng)產(chǎn)生高斯型混合模式的計(jì)算方法�；谏鲜龇椒�,設(shè)計(jì)了一個(gè)功率容量百千瓦量級(jí)、Ka波段、TE0,1模斜角彎頭,并進(jìn)行了實(shí)物加工。實(shí)驗(yàn)結(jié)果表明:在頻率為29 GHz-31.5 GHz、峰值功率130k W、平均功率10k W的情況下,高功率斜角彎頭能有效引導(dǎo)TE0,1模的轉(zhuǎn)彎傳輸。4.采用行波法對(duì)準(zhǔn)光諧振雙工器的傳輸性能進(jìn)行了推導(dǎo),并分析了光柵效率和諧振長(zhǎng)度對(duì)傳輸特性的影響。同時(shí),對(duì)準(zhǔn)光諧振雙工器的濾波性能、Q值及損耗等特性進(jìn)行了理論研究。根據(jù)ITER電子回旋加熱系統(tǒng)的要求,研制了一個(gè)170GHz、LP01模準(zhǔn)光諧振雙工器,并詳細(xì)給出了波束在雙工器內(nèi)的傳播和各個(gè)部件(相位逆轉(zhuǎn)鏡(匹配鏡、諧振鏡)、衍射光柵和功率監(jiān)測(cè)光柵)的設(shè)計(jì)方法及結(jié)果。由于直接采用LP01模而不是先將其轉(zhuǎn)換為高斯模式作為傳輸模式,研制的準(zhǔn)光諧振雙工器具有結(jié)構(gòu)簡(jiǎn)單、緊湊的特點(diǎn)。5.采用實(shí)驗(yàn)的方法對(duì)170GHz準(zhǔn)光諧振雙工器的性能以及其可能的應(yīng)用進(jìn)行了系統(tǒng)地研究與探索�；谌N不同的測(cè)試方法(S-參數(shù)法、量熱計(jì)法和諧振法),對(duì)雙工器傳輸性能進(jìn)行了研究,測(cè)試結(jié)果表明雙工器的諧振通道和非諧振通道的傳輸效率分別為95.4%和98.2%。對(duì)準(zhǔn)光諧振雙工器的輸出和高階模式的濾除能力進(jìn)行了測(cè)試,諧振通道對(duì)低階寄生模式的平均濾除能力為-8dB,高階模式的濾除能力可達(dá)-17.5dB。采用在諧振端口加載不同負(fù)載的方式模擬了等離子體對(duì)電子回旋加熱波的反射對(duì)隔離端口的影響。在多模發(fā)射的情況下,雙工器端口隔離度優(yōu)于40dB;在端口匹配的情況下,雙工器端口隔離度高于60dB。上述結(jié)果表明設(shè)計(jì)的準(zhǔn)光諧振雙工器可用于簡(jiǎn)化大型電子回旋諧振加熱系統(tǒng)的復(fù)雜度、濾除傳輸線上的寄生模式和探測(cè)電子回旋發(fā)射信號(hào)等。
[Abstract]:High power millimeter wave energy weapon system in directional electron cyclotron resonance heating, directed energy weapons, is widely used in the fields of materials surface treatment. Guided wave technology is difficult to meet the traditional high power in these applications, the requirement for high efficiency and high purity transmission. Quasi optical technology specializes in collimation, beam radius (compared with the wavelength of guided wave propagation) beam, provide a new way for efficient transmission of high power millimeter wave. Therefore, actively carry out based on high power millimeter wave transmission device of quasi optical technology to give full play to promote the performance of millimeter wave source, high power millimeter wave applications is of great significance. This paper combines the urgent needs of scientific research the project, on the high power millimeter wave quasi optical transmission system comprises a quasi optical mode converter, elbow angle, quasi optical resonator duplexer and some technical problems in detail Theoretical and experimental research. The research content and the specific work are as follows: 1. by using the method of geometrical optics and waveguide theory, the traditional design method of Denisov radiator is analyzed and improved, put forward the relative phase of low order gyrotron wall perturbation waveguide radiator, optimization technology, improve the ability to control the satellite mode components. At the same time, in order to effectively complete the performance analysis of waveguide radiator, proposes an improved equivalent current integral analysis method. Based on the above theory, the preparation of the corresponding numerical program, optimal design of 94GHz TE5,3 module Denisov radiator, theoretical calculation results show that the system output mirror content up to 98.5%.2. using the scalar Gauss the vector diffraction theory of quasi optical mode converter is studied and analyzed, and the error correction algorithm for Katsenelenbaum-Semenov design Deni The mirror SOV radiator was designed. Finally, in the output window to achieve the waist size is 12mm, the scalar Gauss Gauss vector content is 99.52%, content of 95.93% beam output. In order to experimental study on the performance of the quasi optical mode converter, low power mode of circular polarization excitation is studied. Using the model of actuator the design, carried out experimental research on low power quasi optical mode converter, the experimental results show that the propagation characteristics of the scalar Gauss content output field for 98.6%.3. system of Gauss beam and the waveguide hybrid model, is proposed for TE0m (M? 1). The design method of broadband, low loss and high power miter bend according to this method, the transmission mode of TE0m (M? 1) mode is converted into a mixed mode with Gauss. The propagation characteristics of mode matching technology and the combination of genetic algorithm, proposed a fast adaptive Gauss Calculation method of hybrid model. Based on the above method, the design of a power capacity of 100 Watt, Ka band, TE0,1 angle elbow, and processed. The experimental results show that the frequency is 29 GHz-31.5 GHz 130K W, peak power, average power of 10K W, the transmission performance of turning transmission.4. high power miter bend can effectively guide the TE0,1 mode by using the travelling wave method of quasi optical resonant duplexer is deduced, and analyzed the influence of grating efficiency and the resonance length on transmission characteristics. At the same time, the filtering performance of quasi optical resonant duplexer, Q value and loss was investigated. According to the ITER electron cyclotron heating the requirements of the system, has developed a 170GHz LP01 module, quasi optical resonator duplexer, and gives the detailed beam propagation and the various components in the diplexer (phase reversal mirror (matching lens, resonant mirror), diffraction grating and power Grating) design method and monitoring results. Due to the direct LP01 mode is used instead to convert it to Gauss as a mode of transmission mode, quasi optical resonator duplexer developed has the advantages of simple structure, compact.5. features using the method of experiment on 170GHz performance of quasi resonant optical duplexer and its possible application and to explore the system. Three different test methods (based on S- parameter method, calorimeter and resonance), the transmission performance of the diplexer were studied. The test results show that the transmission efficiency of the resonant channel duplexer and non resonant channel are respectively 95.4% and 98.2%. at the output optical resonator duplexer and high order mode filtering ability was tested. The resonant channel average filtering capability on low order parasitic mode is -8dB, high order mode filter capacity of -17.5dB. used in resonant port loading different load type die To the effect of reflection wave of plasma electron cyclotron heating on the isolation port. In multimode emission case, duplexer port isolation is better than 40dB; in the case of port, port isolation, duplexer is higher than that of 60dB. the results showed that the quasi optical resonator duplexer design can be used to simplify large electron cyclotron resonance heating system the complexity of the filter, the transmission line parasitic mode and detection of electron cyclotron emission signal.

【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN015

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