rf mixer 中文意思是什麼

rf mixer 解釋
射頻混頻器
  • rf : 1 radio frequency 射頻,無線電頻率。2 range finder 【攝,軍】(測定目標距離的)測距計,光學測距儀...
  • mixer : n. 1. 混合者。2. 混合[攪拌]器;【冶金】混鐵爐;混頻器;【無線電】混頻管。3. 〈原美、口〉交際家;交誼會;【無線電】錄音師。
  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. The design process consisted of computer design by circuit simulation software integrate with electromagnetic simulation software, fabrication of microstrip bpf 、 lpf 、 the match circuits, cavity and test. when rf frequency is 91 ~ 97ghz, lo frequency is 47ghz, power is 10 dbm. the best conversion loss of the 2 and 4 sub - harmonic mixer is 13. 5 db and 23. 5db which is shown in the test

    實測表明,在本振為47ghz ,功率10dbm ,測試射頻帶寬為91ghz 97ghz時,二次與四次分諧波混頻器變頻損耗最優處分別為12 . 7db和23db 。最後對實驗結果進行分析並提出改進措施。
  3. The image rejection mixer is composed of two unit mixers, rf is halved as two parts in quadrature ; lo is halved as two parts in phase ; if is synthesized in quadrature

    鏡頻抑制混頻器包含兩個單元混頻器,射頻正交功分,本振同相功分,中頻正交合成。
  4. Third, an active mixer which needs only single - end local oscillator ( lo ) input is presented, which simplifies the rf block design and reduces the impacts of the phase noise of lo

    接著本文提出了一個新型的、只需要單端本振輸入的有源混頻器,簡化了整體電路設計,並降低了本振相噪帶來的影響。
  5. To date, most research on cmos rf circuits is focused on cmos rf front - end including some key building blocks such as low - noise amplifier ( lna ), mixer, bandpass filters, voltage control oscillators and power amplifiers. in si rf 1c, inductors need be realized on a silicon substrate along with all of the other devices in a single chip. in fact, the need for high q integrated inductors in rfics is increasing

    在無線通信技術對cmos射頻集成電路需求的大背景下,本論文在大量深入調研的基礎上,圍繞射頻集成電路中必不可少的、有多種應用的無源器件?硅集成電感及其相關的cmos射頻集成單元電路,先後在上海冶金所微電子分部工藝線上及利用上海市科委的多目標晶元項目( mpw )在無錫華晶上華半導體有限公司進行了大量的實驗研究,得到了一些新的結果。
  6. In the design of w band double - balanced mixer, a novel structure using magic - t and two baluns, which all realized by ratrace, is proposed with no crossing of transmission line. rf and lo signals are transmitted to the circuit by waveguide - to - microstrip probe transitions

    在w頻段雙平衡混頻器的設計中,本文提出由混合環構成的魔t與巴倫級連而成的功率混合電路,這種新穎的電路結構使整個電路單平面化,避免了任何跳線。
  7. Secondly, mixer circuit, one of the key part of rf circuits, was optimized and designed

    其次,優化設計了rf電路中核心部件之一的混頻器( mixer )電路。
  8. In view of the importance of rf front - end circuits in the receiver system, the paper finally is focused on the analysis and design of the rf front - end circuits, including the design of low noise amplifier ( lna ), microstrip filter and balanced mixer. all the circuits above are simulated individually using ansoft serenade, and the results are satisfying with the desired performance

    考慮到射頻前端電路性能的好壞會直接影響到整機的性能,文中還重點論述了該接收機射頻前端電路的分析和設計,主要包括低噪聲放大器、微帶濾波器和單平衡混頻器的理論分析和實際設計,並在ansoftserenade環境下進行了模擬模擬,模擬結果符合設計要求。
  9. Finally, a ku - band receiver combined with lna, mixer and filter is designed, and a complete flow chart for the design process of the front - end circuit is given. in the end, some rf transceiver examples such as microwave power transfer system, satellite communication receiver system and phs cell station system are introduced and analyzed

    最後結合前面各章內容,給出了一個ku波段射頻前端接收機完整設計實例,並給出了包含微波無線供電系統、衛星接收機和phs基站在內的多個射頻前端電路的實例分析。
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