高電平混頻 的英文怎麼說

中文拼音 [gāodiànpínghúnbīn]
高電平混頻 英文
high level mixing
  • : Ⅰ形容詞1 (從下向上距離大; 離地面遠) tall; high 2 (在一般標準或平均程度之上; 等級在上的) above...
  • : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
  • : Ⅰ形容詞1 (沒有高低凹凸 不頃斜) flat; level; even; smooth 2 (高度相同; 不相上下) on the same l...
  • : 混形容詞1. (渾濁) muddy; turbid2. (糊塗; 不明事理) foolish; stupid
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • 高電平 : high level; up level
  1. The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes

    本文就是在此背景下,利用金屬波導和單軸晶體的一些特性,結合麥克斯韋方程組和波導的邊界條件,從三種不同的情況研究了光在對稱面單軸晶體金屬波導(波導層是單軸晶體,兩個波導界面均為金屬)內的傳輸特性,其主要貢獻為,首次解析地得到了這種波導結構下模式場的精確解,並發現了一些有用的特性: ( 1 )模式場的性質因單軸晶體的性質不同而異; ( 2 )當單軸晶體光軸位於波導界面法方向與傳輸方向構成的面內時,波導中傳輸te波和tm波,只不過其主模因單軸晶體的性質不同而異,當波導層介質為負單軸晶體時,波導主模是te波主模,而波導層介質為正單軸晶體時波導主模是tm波主模。 ( 3 )當單軸晶體光軸位於波導面內時,對于正單軸晶體,波導的主模是橫波te _ 0模,任何率的光波均可激勵該模式;當光波波長滿足一定條件時,波導內傳輸單模,否則,將激勵起階模式,階模即匪te波,也匪tm波,而是兩者耦合而成的合模。
  2. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字視地面廣播的需求條件,技術難點和目前存在的問題,並重點分析了dvb - t系統結構流程,核心技術及系統通道特性和參數,該系統採用了cofdm (編碼正交分多路復用) ,大量導信號插入和保護間隔技術等核心技術,使之能抵抗( 0db ) ,長延時的靜態和動態多徑失真,有利於數字和模擬視的合傳輸,它的多載波調制模式功能和性能在移動和便攜接收、同網等方面具有獨特的優勢。
  3. In practical studies, finally, a hybrid active power filter based on the digital signal processor ( dsp ) and intelligent power module ( ipm ) was set up, including a cycloconverter acem. based on the experimental set - up, plenty of experimental studies were conducted. the experimental results demonstrate that the self - adaptive technique, the topology of series connected hybrid power filter and the corresponding significant technologies described above are feasible and practical

    最後,實際研製了一套以dsp (速數字信號處理器)和ipm (智能功率模塊)為核心的小功率合型有源濾波裝置,在交交變acem實驗臺上進行了全面的實驗研究,充分驗證了本文所提出的自適應同步相關濾波技術、優化合型濾波器拓撲結構和有關的關鍵性技術的正確性和實用性,從而從理論到實踐全方位、成功地實現了對交流勵磁發機輸出力諧波抑制的研究。
  4. At the same time, the method of disposal phase shift of ct by compensation is introduced. then the analysis and statistic of electrical power quality, the control scheme and compensating amount of capacitor for reactive power compensation are analyzed respectively. and in the paper, the control with a / y and the switch with ac contactor and solid state switch is valid measure not only for improving operate level economically and amending electrical power quality but also for avoiding of replacing switch frequently and decrease economic loss

    然後對現有的演算法進行了詳細的分析、比較,篩選出既能滿足硬體要求又可降低投資、保證精度、簡化軟體的方案,確定了準同步采樣的方案,並通過對準同步采樣誤差的分析,提出了一種從45開始采樣,從而提精度的采樣數據處理辦法,同時,對于流互感器相位漂移提出了一種補償辦法,接著對裝置中能質量分析與統計以及無功補償中容器的補償量、投切原則也作了相應分析,其中對于無功補償採用y合接線,並利用交流接觸器和固態開關共同投切容,不但提了經濟運行水、改善了能質量,而且有效的避免了繁更換開關,減少了經濟損失;最後,設計了裝置的硬體路並繪制了相應的軟體流程圖。
  5. For the application of direct broadcast satellite ( dbs ), a ku - band high image rejection broadband mixer is designed using ads. it appears predominant performances when compared with common single balanced mixer

    針對衛星視直播接收系統,用ads設計了一個寬帶、鏡像抑制度、低噪聲的ku波段鏡像抑制器,並同普通器進行了對比分析,顯示了其優越的性能。
  6. The normal glow discharge between the main electrodes and the rapid flow of the unpolluted gas mixtures are necessary conditions for the output of high average power for tea co2 laser

    極間正常的輝光放以及使合氣快速流動且不被污染是重復率teaco _ 2激光器實現均功率輸出的重要條件。
  7. Compared with all kinds of mixer circuits and emphasized on improving linearity of the mixer, double balance current switch circuit has been chosen for mixer

    對比分析器的各種拓撲結構,從提器的線性度出發,折衷考慮功耗、線性度、增益等因素的影響,選取雙流開關路作為器的核心單元。
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