本文關鍵詞：新型正弦波導太赫茲慢波結構和器件的研究　出處：《電子科技大學》2017年博士論文　論文類型：學位論文

  更多相關文章： 太赫茲 行波管 返波管 慢波結構 新型正弦波導

【摘要】：太赫茲科學技術是當今電子科學技術領域的研究熱點,它在寬帶通信、生物醫(yī)學成像、安全檢查、無損檢測等諸多方面具有極為重要的應用價值。在太赫茲科學技術領域,如何產(chǎn)生太赫茲波是一個非常關鍵的問題,真空電子技術則是用來開發(fā)太赫茲輻射源的一種有效技術途徑。行波管和返波管是眾多傳統(tǒng)真空電子器件中應用最為廣泛的大功率輻射源。然而,隨著工作頻率升高到太赫茲頻段,作為器件核心組件的慢波結構遇到了耦合阻抗低、反射強以及傳輸損耗大等關鍵性技術難題。為了解決這些問題,作者通過慢波結構的創(chuàng)新來實現(xiàn)突破。本論文中,作者提出了脊加載正弦波導(RLSWG)、平頂型正弦波導(TSWG)、開槽正弦波導(SSWG)、正弦型脊波導(SSRWG)四種新型電磁結構。通過研究發(fā)現(xiàn),四種新結構在一定程度上解決了慢波電路耦合阻抗低、反射強以及傳輸損耗大等問題。因此,作者結合每種結構各自的優(yōu)勢,將它們應用到相應的器件設計中,這樣可以有效地提高現(xiàn)有大功率太赫茲輻射源的工作性能。論文中首先對四種新型慢波電路的慢波特性、傳輸特性以及注-波互作用特性開展了深入的研究工作。然后,結合每種結構的特點,將它們應用到太赫茲行波管和返波管的設計中。論文中的具體創(chuàng)新點包括:1.提出了一種適合與圓形電子注互作用的脊加載正弦波導,該結構具有耦合阻抗大、傳輸損耗低、反射弱等優(yōu)勢。接下來,基于這種新型慢波結構優(yōu)化設計出G波段圓形電子注行波管的高頻系統(tǒng)。注-波互作用模擬結果表明,相比于常規(guī)正弦波導行波管,脊加載正弦波導行波管具有更大的輸出功率和更短的互作用長度。在G波段,最大輸出功率提高14.3%,而互作用長度縮短約9.6%。2.提出了一種適合與帶狀電子注互作用的平頂型正弦波導,該結構具有工作頻帶寬、耦合阻抗大、傳輸損耗低、反射弱等優(yōu)勢。注-波互作用模擬結果表明,平頂型正弦波導行波管比常規(guī)正弦波導行波管具有更大的輸出功率和更短的互作用長度。在G波段,最大輸出功率提高15.1%,而互作用長度縮短約16%�；谄巾斝驼也▽ЫY構,設計出220GHz帶狀注行波管的高頻系統(tǒng)。當電子注電壓為20.8kV、工作電流為100mA時,此行波管在210~255GHz的頻率范圍內產(chǎn)生57.5W以上的輸出功率,輸出增益大于30.6dB,最大輸出功率達到115W,3dB帶寬超過45GHz。3.提出了可應用于圓形電子注返波管中的開槽正弦波導,該結構具有耦合阻抗極大、傳輸損耗低等優(yōu)勢。同時,采用開槽正弦波導優(yōu)化設計出一種新型的反射器,并將其應用到380GHz圓形電子注開槽正弦波導返波管設計方案中。粒子模擬結果表明,在工作電流為30mA時,通過調諧工作電壓從20kV到32kV,該返波管在363.4~383.8GHz的頻率范圍內可以產(chǎn)生8.05W以上的輸出功率。4.結合常規(guī)正弦波導與雙脊矩形波導的結構特點提出了正弦型脊波導,該結構具有冷通帶帶寬寬、耦合阻抗大、傳輸損耗低等優(yōu)勢。注-波互作用模擬結果表明,在0.6-1THz頻段內正弦型脊波導返波管比常規(guī)正弦波導返波管具有更大的輸出功率。同時,正弦型脊波導返波管的調諧帶寬比常規(guī)正弦波導返波管拓寬約13.2%。構建了G波段瓦量級正弦型脊波導返波管高頻系統(tǒng),該高頻系統(tǒng)中包括正弦型脊波導慢波結構、能量輸出結構、終端匹配負載結構、阻抗轉換器等組件。在工作電流為11mA時,通過調諧工作電壓從6kV到18kV,該返波管在175.2~251.9GHz的頻率范圍內可以產(chǎn)生0.99W以上的輸出功率。5.構建出W波段正弦型脊波導傳輸特性的實驗測試模型,并完成對此模型的加工以及傳輸特性的測試。實驗測試結果為:在75~110GHz測試頻帶內,傳輸參量大于-3.65dB,除80.5GHz頻點外,絕大部分反射參量都小于-15dB,這表明正弦型脊波導慢波結構在很寬的頻帶內具有很好的傳輸特性。綜上所述,本文中關于四種新型慢波電路的研究及相關應用設計為太赫茲行波管和返波管的研究起到了推動作用,同時也為新型太赫茲輻射源的研制提供了更多的技術儲備。
[Abstract]:Terahertz Science and technology is a hot research topic in the field of Electronic Science and technology, it in broadband communications, biomedical imaging, safety inspection, nondestructive testing and other aspects has very important application value in the field of technology. How to generate Terahertz Science, terahertz wave is a very critical issue, the vacuum electronic technology is an effective technology way for the development of THz radiation source. TWT and BWO is one of many traditional vacuum electronic devices widely used most high-power radiation source. However, with the working frequency to terahertz band, as the core component of the slow wave structure devices encountered strong reflection and low coupling impedance, large transmission loss etc. technical problems. In order to solve these problems, the author through the innovation of the slow wave structure to achieve a breakthrough. In this thesis, the author puts forward the ridged sine waveguide (RLSWG), Flat type sine waveguide (TSWG), slotted waveguide (SSWG), sine sine ridge waveguide (SSRWG) four new electromagnetic structure. Through the study found that four kinds of new structure in a certain extent to solve the slow wave circuit coupled low impedance, reflection and strong transmission loss and so on. Because of this, the author combines the advantages of each of their respective structure, apply them to the corresponding device design, which can effectively improve the performance of existing high-power terahertz radiation source. Firstly four novel slow wave circuit of slow wave characteristics, transmission characteristics and beam wave interaction characteristics to carry out in-depth research work. Then, according to the characteristics of each structure, they are applied to THz TWT and design BWO. The innovation point in the paper include: 1. proposes a ridged sine wave and circular electron beam interaction, the structure has The coupling impedance, low transmission loss, weak reflection and other advantages. Then, this new type of slow wave structure optimization design system of high frequency G band circular electron beam traveling wave tube based on beam wave interaction simulation results show that compared with the conventional sine wave traveling wave tube, the interaction length of ridge loaded sine wave traveling wave tube has more guide the output power and shorter. At G band, the maximum output power is increased by 14.3%, while the interaction length is about 9.6%.2. the flat type sine waveguide for sheet electron beam, the structure has the advantages of wide frequency band, coupling impedance, low transmission loss, weak reflection beam wave and other advantages. The interaction of the simulation results show that the flat type sine wave interaction in traveling wave tube guide tube has larger output power and shorter than the conventional sine wave traveling wave length. In G band, the maximum output power is increased by 15.1%, while the length of interaction Shortened about 16%. flat type sine waveguide structure based on Design of high frequency 220GHz system sheetbeam TWT. When the electron beam voltage is 20.8kV, working current is 100mA, the wave tube produce an output power of more than 57.5W in the frequency range of 210~255GHz, the output gain of more than 30.6dB, the maximum output power is 115W, more than 3dB bandwidth 45GHz.3. proposed can be applied to circular electron injection back slot sine waveguide of the structure has great coupling impedance, low transmission loss. At the same time, the slot sine waveguide designs a new type of reflector, and its application to 380GHz round beam guide slot sine wave BWO design. The results show that when the working current is 30mA, from 32kV to 20kV by tuning the working voltage, the BWO can produce more than 8.05W in the frequency range of 363.4~383.8GHz transmission A power.4. based on the structural characteristics of the conventional sine waveguide and double ridge rectangular waveguide presents sinusoidal ridge waveguide, the structure has a cold pass band width, coupling impedance, low transmission loss. The beam wave interaction. The simulation results show that in the frequency range of 0.6-1THz sinusoidal ridge wave guide BWO than conventional sine waveguide BWO has higher output power. At the same time, the sinusoidal wave tube back ridge waveguide tunable bandwidth than the conventional sine wave guide carcinotron broaden about 13.2%. constructed G band watt sinusoidal ridge waveguide BWO frequency system, including sinusoidal ridge waveguide slow wave structure of the high frequency package system, energy the output structure, terminal matching load impedance converter structure, and other components. When the working current is 11mA, from 18kV to 6kV by tuning the working voltage, the BWO can produce more than 0.99W of output power in the frequency range of 175.2~251.9GHz.5 Build a test model. The transmission characteristics of W band sinusoidal ridge waveguide, and complete the model processing and transmission characteristics of the test. The test result is: in the 75~110GHz frequency band, transmission parameter is greater than -3.65dB, in addition to the 80.5GHz frequency, most reflection parameters are less than -15dB, which indicates that the sinusoidal ridge waveguide slow wave structure in a very wide frequency band transmission has very good characteristics. In conclusion, research on four novel slow wave circuit and related applications for research and design in this paper BWO THz TWT plays a role, but also provides more technical reserves for development of a new terahertz radiation source.

【學位授予單位】：電子科技大學
【學位級別】：博士
【學位授予年份】：2017
【分類號】：TN12

【參考文獻】

相關期刊論文 前10條

1 徐翱;周泉豐;閻磊;陳洪斌;;0.22THz折疊波導行波管初步實驗研究[J];強激光與粒子束;2013年11期

2 宮玉彬;魏彥玉;段兆云;王戰(zhàn)亮;徐進;岳玲娜;趙國慶;殷海榮;路志剛;鞏華榮;唐濤;黃民智;王文祥;許雄;賴劍強;沈飛;張亞斌;;毫米波/太赫茲真空器件中的帶狀電子注和新型慢波結構[J];真空電子技術;2013年01期

3 許雄;魏彥玉;沈飛;黃民智;段兆云;岳玲娜;王戰(zhàn)亮;宮玉彬;王文祥;;650GHz正弦波導返波管的模擬計算[J];強激光與粒子束;2012年01期

4 廖復疆;;真空電子器件在100GHz以上頻域的應用[J];真空電子技術;2011年05期

5 董燁;董志偉;楊溫淵;陳軍;;0.22THz折疊波導行波管放大器理論分析與數(shù)值模擬[J];信息與電子工程;2011年03期

6 陳樟;王亞軍;;0.14THz折疊波導行波管慢波結構設計與加工[J];信息與電子工程;2011年03期

7 蔡紹倫;馮進軍;;Ka波段連續(xù)波500W螺旋線行波管研究[J];真空電子技術;2010年06期

8 王自成;李海強;王莉;徐安玉;董芳;趙建東;黃明光;劉濮鯤;;32-40GHz寬帶大功率行波管的研究進展[J];微波學報;2010年S1期

9 阮存軍;王樹忠;趙鼎;阮望;王勇;謝敬新;;新型帶狀注毫米波器件的研究進展[J];真空電子技術;2010年02期

10 馮進軍;胡銀富;蔡軍;鄔顯平;唐燁;;W波段行波管發(fā)展評述[J];真空電子技術;2010年02期

相關會議論文 前2條

1 張魯奇;魏彥玉;高宇航;江雪冰;雷霞;徐進;趙國慶;宮玉彬;;G波段正弦波導行波管的設計和研究[A];2016真空電子學分會第二十屆學術年會論文集（上）[C];2016年

2 蔡軍;馮進軍;胡銀富;鄔顯平;杜英華;劉京愷;陳輯;董芮彤;張小青;崔延軍;潘攀;童義;;W波段脈沖行波管放大器[A];中國電子學會真空電子學分會第十九屆學術年會論文集（上冊）[C];2013年

相關博士學位論文 前6條

1 劉洋;V波段新型慢波結構行波管的研究[D];電子科技大學;2012年

2 許雄;正弦波導及其應用的研究[D];電子科技大學;2012年

3 張長青;大功率毫米波折疊波導行波管的研究[D];電子科技大學;2011年

4 王建勛;Ka波段回旋放大器及W波段帶狀束電子光學系統(tǒng)的研究[D];電子科技大學;2010年

5 何俊;毫米波新型曲折波導行波管的研究[D];電子科技大學;2010年

6 蔡軍;W波段折疊波導慢波結構的研究[D];山東大學;2006年

相關碩士學位論文 前1條

1 廖明亮;毫米波新型曲折波導慢波結構的研究[D];電子科技大學;2010年

，

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