高頻發射機 的英文怎麼說

中文拼音 [gāobīnfāshèjī]
高頻發射機 英文
high frequency tra mitter
  • 高 : 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...
  • 頻 : 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...
  • 發 : 名詞（頭發） hair
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 機 : machineengine
  • 高頻 : high frequency
  1. Khz high pulse repetition frequency multibeam klystron transmitter

    高重頻多注速調管發射機110
  2. These high-frequency shout waves are only able to travel in straight paths from the transmitter.

    這些高頻短波從發射機發出后只能從直線傳播。
  3. As the key block of the wireless communication transmitter in rf, it is very useful in improving the output power and efficiency, lowering the loss of the supply, lowering the size and the weight, lengthening the time of communication. class e power amplifier which is suitable to amplify envelop signal is very important in modern communication system

    功率放大器（ pa ）作為無線通信射頻發射機中不可缺少的關鍵電路，對于提高手機的功率效率、降低電源損耗、減小體積重量、延長通話時間有著舉足輕重的作用，而適用於恆包絡信號放大的e類功率放大器，更是在現代通信系統中佔有十分重要的地位。
  4. Thirdly, a ladar transmitter with high repetition rate which uses pulsed laser diode is manufactured. the power characteristics, spectrum characteristics and temperature characteristics of the laser diode are discussed

    研製了一種重復頻率高的脈沖半導體激光器激光雷達發射機，討論了半導體激光器的功率特性、光譜特性和溫度特性。
  5. In order to test the real - time temperature in the cooking cocoon machine, which is favourable to develop the management of the produce, this thesis exploit a system of remote testing, by adopting wireless remote detecting, on the basis of actual thing in the produce locale, which solve the problem that it can ? test the dynamic real - time cooking cocoon temperature

    為了實時地測試出煮繭機內的溫度，以利於生產工藝中的管理水平的提高，本課題根據生產現場的實際情況出發，採用數字溫度傳感器、微功耗的單片機和射頻發射接收模塊，開發了一遙測系統，建立了一套專用的通信系統。
  6. Uhf vision transmitter

    特高頻圖象發射機
  7. On the base of summarizing and reference to the achievement of uhf complete solid - state high - frequency power amplifier abroad, the author have made a deep research in uhf 10kw electron tube tv transmitter power amplifiers which are widely used inland, and asked for ideas of a lot of engineers of chongqing tv transmitting station, brought forward a practicable solidification scheme under the guidance of prof. gao chao and prof. guoyongcai, and made a successful practice at chongqing tv transmitting station

    筆者在總結和借鑒國內外有關uhf全固態電視發射機高頻線性功率放大器研究成果的基礎上，對目前國內電視發射臺普遍採用的uhf10kw電子管電視發射機高頻線性功率放大器進行了深入研究，並廣泛徵求重慶電視發射臺工程師的意見，在重慶大學高潮教授和郭永彩教授的指導下，提出了切實可行的固態化改造方案，並在重慶電視發射臺實踐成功。
  8. High - power amplifiers are a necessary component of wireless transmitters at microwave and millimeter - wave frequencies

    高功率放大器是微波和毫米波頻段發射機必不可少的關鍵部件。
  9. The transmitter adopt qam modulation mode, which is a directly modulation upper frequency conversion mode, which could afford more high bit rate transmission in the same bandwidth compared to other modulation mode

    發射機採用數字式調制方式，即qam直接調制上變頻方式，相對于其它調制方式可以實現在相同帶寬下的高碼率傳輸。
  10. Radio broadcasting systems - very high frequency, frequency modulated, sound broadcasting transmitters ; english version ets 300384 : 1995

    無線電廣播系統.甚高頻調頻的聲音廣播發射機
  11. The realization of high code rate property is also mentioned. in the end of this paper, the author lays the emphasis on the circuit realization of high - code - rate pcm transmitter with quasi two - point injection techniques

    本文的最後部分，作者重點對準兩點注入式高碼速率發射機（主要是調頻源）的電路實現作了詳盡的分析。
  12. As for the tv transmitter of uhf of which the power grade is above 10kw, the valve power amplifier such as the electron tube, klystron and iot are widely adopted in high - frequency linear power amplifier

    功率等級在10kw以上的uhf （特高頻）電視發射機，其高頻線性功率放大器普遍採用電子管、速調管、感應輸出管（ iot ）等電真空管放大器件。
  13. To compare with transistor ( complete solid - state ) high - frequency linear power amplifier, there are some disadvantages : bad stability and reliability, low efficiency, high cost for operating, huge cabinet, heavy maintenance work load, low security for high - voltage electricity offering, and to ensure the continuance of tv program, the transmitter must be operating with main frame and spare frame

    它們與晶體管（全固態）高頻線性功率放大器相比，存在著穩定性及可靠性差、效率低、運行費用高、發射機體積大、日常維護工作量大、高壓供電不安全、必須採用主機和備機的運行方式來確保電視節目不停播等缺點。
  14. In this paper, the author comprehensively expatiates the research on microwave phase in - lock frequency modulation. at first, the background of reentry telemetry system and the features of pcm telemetry system are presented, and then the author mainly discusses the application of phase in - lock fm techniques in the design of pcm transmitter and the analysis of characteristics of binary pcm reentry telemetry channel

    在文章的前面，作者簡單介紹了目前再入遙測技術發展現狀和pcm系統的特點；然後給出了二元pcm再入遙測通道的系統分析和高碼速率數據傳輸實現的主要途徑；在文章的第三部分，討論了鎖相調頻技術及其在pcm遙測發射機中的實際應用。
  15. Global maritime distress and safety system - part 7 : shipborne vhf radiotelephone transmitter and receiver - operational and performance requirements, methods of testing and required test results

    海上呼救和安全體系.第7部分:船用甚高頻無線電話發射機和接收機的操作功能要求試驗方法和所需要的試驗結果
  16. Because of the affection of noise and signal fading, in order to high data rate access and high quality, wireless communication need new technology to improve the link reliability and enhance the spectrum efficiency. mimo ( multiple input and multiple output ) can enhance the spectrum efficiency and increase channel capacity greatly, and reduce the multipath affection without spectrum band and power increasing. the 3th generation mobile communication wcdma is coming, with the purpose of putting mimo, stbc ( space time block coding ), space diversity into practice of wcdma systems, in order to lay the foundation of 3g toward 4g, this dissertation has done some research under this background

    在發射機和接收機使用多個天線進行數據傳輸的多輸入多輸出（ mimo ）技術，可以在不增加帶寬和天線發送功率的條件下，成倍的提高頻譜利用率，提高系統的通道容量，還可以抗多徑干擾。第三代移動通信wcdma即將到來，為了將多天線技術（ mimo ） ，空間分集技術，空時編碼技術用到wcdma系統中去，為第三代移動通信向第四代移動通信系統平穩過渡奠定一定的基礎，需要做一些理論上的研究。
  17. ( 2 ) made a research in the composing mode of the high - frequency linear power amplifier of uhf complete solid - state transmitter

    （ 2 ）對uhf全固態電視發射機高頻線性功率放大器的組成方式進行了研究。
  18. Pointed out that it is a very important subject to look for the advanced, high - efficiency, useable, stable, reliable high linear power amplifier of uhf tv transmitter by now

    指出：尋求先進、高效、實用、穩定、可靠的uhf電視發射機高頻線性功率放大器，至今仍是一個十分重要的技術課題。
  19. ( 4 ) specially made a research in the key technology of uhf complete solid - state high - frequency linear power amplifier : balancing transistor high - frequency linear power amplifier and the technology of 3db power integrating ( allocating )

    （ 4 ）重點研究了uhf全固態電視發射機高頻線性功率放大器的關鍵技術：平衡式晶體管高頻線性功率放大器以及3db功率合成（分配）技術。
  20. Firstly, in wireless environment, receiver has no know the time delay between transmitter and itself. in ofdm system, ofdm data is transmitted as one symbol, so in order for correct demodulation, the correct start of symbol should be got from ofdm system to reduce the effect of isi. secondly, the high frequency utilization in ofdm is based on the orthogonal properties of sub carriers. if frequency offset is generated, the orthogonal properties among sub carriers will lost, that will cause inter carrier interference ( ici ) and high ber of system

    Ofdm技術也存在著一些缺陷，首先，在無線環境中傳輸的ofdm信號對定時要求高，為了減少碼間串擾（ isi ）影響，必須從接收信號中提取出正確的符號起始位;其次， ofdm系統對頻率偏移敏感， ofdm技術的高頻譜利用率和傳輸可靠性均以子載波的正交性為基礎，如果接收機和發射機之間發生頻率偏移，子載波之間就會失去正交性，導致嚴重的子載波間干擾（ ici ） ，降低系統性能。
分享友人
分享到 Line

分享到臉書