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雙共焦波導(dǎo)回旋行波管高頻結(jié)構(gòu)的電磁特性研究(英文)

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  研究了雙共焦波導(dǎo)回旋行波管高頻結(jié)構(gòu)的電磁特性。根據(jù)惠根斯原理的光衍射理論,分析得出雙共焦波導(dǎo)中的兩類本征模式(疊加模和環(huán)形模)對(duì)應(yīng)的截止頻率和場(chǎng)分布情況。理論分析結(jié)果與商用仿真軟件CST的仿真結(jié)果一致。其中用作回旋行波管工作模式的"反相疊加TE06模"的損耗明顯小于其他模式,這種不同模式損耗不同的特性將有效抑制競(jìng)爭(zhēng)模式帶來(lái)的寄生振蕩。雙共焦波導(dǎo)的模式密度略大于傳統(tǒng)單共焦波導(dǎo)的模式密度,但是明顯小于圓波導(dǎo)的模式密度,因此雙共焦波導(dǎo)適合用作回旋行波管的高頻結(jié)構(gòu)。 

【文章來(lái)源】:紅外與毫米波學(xué)報(bào). 2020,39(05)北大核心EISCICSCD

【文章頁(yè)數(shù)】:6 頁(yè)

【部分圖文】:

雙共焦波導(dǎo)回旋行波管高頻結(jié)構(gòu)的電磁特性研究(英文)


圖3單共焦波導(dǎo)橫截面幾何結(jié)構(gòu)圖??

波導(dǎo),構(gòu)型,兩類模式,環(huán)形


tions,?as?shown?in?Fig.?2(b).??(a)??(b)??Fig.?2?The?diagram?of?the?modes?in?a?double?confocal?wave???guide?(a)?Superposition?mode:?(b)?Ring?mode??圖2雙共焦波導(dǎo)中兩類模式的構(gòu)成形式(a)疊加模的構(gòu)型;??(b)環(huán)形模的構(gòu)型??Fig.?1?3-D?configuration?of?a?double?confocal?waveguide??圖1雙共焦波導(dǎo)的3維結(jié)構(gòu)??In?order?to?utilize?a?double?confocal?waveguide?as?a??beam-wave?interaction?structure?in?a?gyro-TWT,?it?is?nec???essary?to?make?clear?the?eigenmodes?and?their?corre???sponding?electromagnetic?(EM)?characteristics?in?a?dou???ble?confocal?waveguide.?In?this?paper,?the?EM?character???istics?of?a?doul)le?confocal?waveguide?for?a?gyro-TWT?will??be?investigated?in?details.?The?rest?of?this?paper?is?orga???nized?as?following.?The?investigation?on?eigenmodes?in?a??double

兩類模式,構(gòu)型,波導(dǎo),形式


he?consecutive?reflection?of?the??field?among?four?mirrors?in?clockwise?or?counterclockwise??directions,?as?shown?in?Fig.?2(b).??(a)??(b)??Fig.?2?The?diagram?of?the?modes?in?a?double?confocal?wave???guide?(a)?Superposition?mode:?(b)?Ring?mode??圖2雙共焦波導(dǎo)中兩類模式的構(gòu)成形式(a)疊加模的構(gòu)型;??(b)環(huán)形模的構(gòu)型??Fig.?1?3-D?configuration?of?a?double?confocal?waveguide??圖1雙共焦波導(dǎo)的3維結(jié)構(gòu)??In?order?to?utilize?a?double?confocal?waveguide?as?a??beam-wave?interaction?structure?in?a?gyro-TWT,?it?is?nec???essary?to?make?clear?the?eigenmodes?and?their?corre???sponding?electromagnetic?(EM)?characteristics?in?a?dou???ble?confocal?waveguide.?In?this?paper,?the?EM?character???istics?of?a?doul)le?confocal?waveguide?for?a?gyro-TWT?will??be?investigated?in?details.


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