甚高頻接收機 的英文怎麼說

中文拼音 [shégāobīnjiēshōujī]
甚高頻接收機 英文
vhf receiver
  • 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...
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 機 : machineengine
  • 高頻 : high frequency
  • 接收機 : receiver; radio set; receiving set; receiving machine接收機保護設備 reprod; 接收機保護裝置 receiver protector
  • 接收 : 1 （收受） receive; reception; accept; [電學] receipt; receiving 2 （接管） take over; expropriat...
  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. Telecommunications - electromagnetic compatibility and radio spectrum matters - radiotelephone transmitters and receivers for the maritime mobile service operating in vhf bands - part 1 : technical characteristics and methods of measurement v1. 3. 1

    電信.電磁兼容性和無線電頻譜情況.工作在甚高頻帶的海上移動業務用無線電話傳送機和接收機.第1部分:技術特性和測量方法
  3. 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
  4. Conversion of signals from if analog into digital samples carrying phase and amplitude information has been traditionally implemented in the form of two parallel if to baseband converters operated in quadrature each followed by a / d converters which thus provide digitized in - phase ( i ) and quadrature ( q ) components

    對于傳統雷達信號接收機，幅相一致性較差。為克服這一問題，人們考慮在中頻，甚至射頻就對信號數字化，再在數字域內進行解調。同樣需要高速的數據採集系統才能滿足要求。
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