甚高頻波段 的英文怎麼說

中文拼音 [shégāobīnbōduàn]
甚高頻波段 英文
very high frequency band
  • 甚 : 甚代詞[書面語] （什麼; 怎麼） what
  • 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...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 高頻 : high frequency
  • 波段 : [電學] wave band; wave range; band; range; frequency range; frequency band
  1. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  2. Rfid antennas we research operate at 915mhz, which belong to vhf, therefore microstrip patch antenna is adopted as base station antenna and various balanced dipole antennas are employed as tag antennas. then, a brief introduction is given on the radiating principles of the microstrip antenna

    由於本課題所研究的rfid天線主要工作於915mhz ，屬于甚高頻波段，因而基站天線主要採用微帶貼片型，標簽天線主要採用各種對稱振子型天線。
  3. Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band

    在本論文的研究過程中，通過合理利用各種現有的天線寬帶化和小型化的理論成果、有效的綜合各種技術措施，運用矩量法和遺傳優化演算法等數值方法，深入研究了加載單極子天線問題，旨在全面提高高頻/甚高頻頻段內的天線增益和降低電壓駐波比，以獲得較高增益的、基本滿足駐波要求的小型超寬帶天線。
  4. Gyrotron is a new and important type of electrical microwave device from 50th years of last century to current. as a high power resource, it can produce and amplify milimeter and submilimeter - wave radiation at high frequency

    迴旋管是20世紀50年代後期發展起來的一類新型微波電子器件，它能在毫米甚至亞毫米波段產生或者通過放大得到大功率微波輻射，並具有相當高的工作頻率。
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