無噪聲放大器 的英文怎麼說

中文拼音 [wúzàoshēngfàngdàqì]
無噪聲放大器 英文
noise-free amplifier
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 放 : releaseset freelet go
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 放大器 : amplifier; pantograph; lawnmower; enlarger; magnifier
  • 放大 : amplify; magnify; boost; enlarge; blow up; gain; amplification; enhancement; multiplication; magn...
  1. Low noise amplifier ( lna ) is widely used in front end of a received set of mobile communication 、 wireless radio 、 blueteech technology and so on 。 the active device is the core of the circuit and has significant effects on the whole equipment, therefore, the design of the active device is vital in lna

    微波低噪聲放大器（ lna ）廣泛應用於移動通訊、無線電、藍牙技術等的rf前端。 lna中的有源器件是整個電路的核心，對整個放大器電路的性能有著重要的影響，因此有源器件的設計是lna的關鍵技術之一。
  2. Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section

    在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。
  3. Because of the using of interpolation, noise shaping and switching amplification in the digital audio amplifier technology, the power supply modulator is not only much efficient but also behaving good in envelope amplification, this advantage is hard to implemented with conventional technology

    數字音頻功放技術是近年發展起來的高效率音頻放大技術，該放大技術採用了過取樣、噪聲整形等數字音頻處理演算法和開關功率放大。採用該技術實現的電源調制器不但具備很高的效率，而且能高指標地放大包絡信號，是常規的電源調制技術無法實現的。
  4. In order to measure the characteristics of such semiconductor optical amplifier, we adopted a set of measurement system. this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components. such device presents good polarization insensitivity ( < 0. 9db ), wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power, the maximum fiber - to - fiber gain of 10db, lossless operation current of 50 - 75ma for different input signal light wavelength and power, large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db )

    與張瑞英博士一起，首次利用該種有源區結構制備出偏振不靈敏半導體光放大器，並在0 - 200ma注入電流范圍內獲得33nm的3db帶寬，在不同信號波長，不同信號功率0 - 200ma的注入電流范圍內，偏振相關損耗均《 0 . 9db ，在耦合差損為7db / facet的條件下，最大fiber - to - fiher增益達10db ，無損操作電流為50 - 70ma ，消光比達50db以上，而噪聲指數則低於8db ，最小可達4 . 6db 。
  5. Research on cmos implementation of wlan transceiver rf front - end is done in this thesis. the transceiver uses the most used super - heterodyne architecture, its rf front - end consists of low noise amplifier, down - converter, up - converter, preamplifier, lo buffer and pll frequency synthesizer

    本論文研究無線局域網收發機射頻前端的cmos實現，該收發機採用超外差式的拓撲結構，其射頻前端主要由低噪聲放大器、下變頻器、上變頻器、末前級、本地振蕩信號緩沖器和鎖相環型頻率合成器等模塊組成。
  6. Low noise amplifier ( lna ) is a key component in the front - end of rf transceiver

    低噪聲放大器（ lna ）是無線收發機前端的關鍵電路之一。
  7. Methods of measurement for radio equipment used in satellite earth stations ; part 2 : measurements for sub - systems ; section three : low - noise amplifier

    衛星地面站用無線電設備的測量方法.第2部分:分系統的測量.第3節:低噪聲放大器
  8. Because of low noise figure, high linear, broad frequency scale and simple structure, lossless feedback broadband amplifier becomes one of the most important types of broadband amplifiers

    無損耗反饋寬帶放大器以其噪聲低、線性好、寬頻帶以及結構簡單的特點成為重要的寬帶放大器類型。
  9. This paper studies the design methods and techniques of the broadband lna. using negative feedback techniques and lossy match method, a broadband lna acceptable for sdr is presented. the measured results showed that over 30mhz ~ 3000mhz, the lna achieved a maximum noise figure of 2. 0db, a power gain of 22db with gain flatness of less than 2. 0db

    本文最後對寬帶低噪聲放大器的設計方法進行了詳細探討，並運用負反饋技術和有損匹配的方法，研製了一種適合軟體無線電應用的寬帶低噪聲放大器，經測試，在30 3000mhz頻率范圍內，噪聲系數nf 2 . 0db ，增益g = 22db 2 . 0db 。
  10. Methods of measurement for radio equipment used in satellite earth stations - part 2 : sub - systems measurements - section three : low noise amplifier

    衛星通信地球站無線電設備測量方法第2部分:分系統測量第3節:低噪聲放大器
  11. As a key component of rf front - end, broadband low noise amplifier ( lna ) becomes important in the sdr receiver

    寬帶低噪聲放大器作為接收機射頻前端的關鍵部件之一，在軟體無線電中起著重要的作用。
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