gain-bandwidth 中文意思是什麼
gain-bandwidth
解釋
增益帶寬-
The theoretical part mainly refers to studies of optical parametric chirped pulse amplification. we analyze some basic theories of opcpa, such as phase matching, parametric bandwidth, walk - off in space and time, gain property and so on, and compare the basic properties of bbo, lbo and kdp
理論部分主要是對新興的光參量啁啾脈沖放大技術的相位匹配、參量范圍、時空走離、增益及帶寬特性等基礎理論進行了分析，並對常用的bbo 、 lbo和kdp基礎特性進行了比較分析，這對于光參量啁啾脈沖放大系統的設計具有一定的實際意義。 -
The results indicate that compared with the antenna without reflecting structure, the proposed antenna achieves broader impedance bandwidth, increases the forward radiation gain and has stronger backward radiation suppression
結果表明，與沒有地平面反射結構的天線相比，該印製偶極子天線增加了抗帶寬，提高了前向輻射增益，抑制了後向輻射。 -
A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )
設計了一種基底鉆周期圓孔結構的電磁（光子）晶體貼片天線，用fdtd方法並結合pml吸收邊界條件對該天線進行了研究，結果表明本文所設計的基底鉆孔型電磁晶體貼片天線取得了多方面的性能改善，與普通天線相比，基底中的表面波受到很大抑制，天線的帶寬增加，遠場方向圖上天線的旁瓣和背瓣被明顯削弱，向前輻射的增益由原來的12db增加到26db ，增加了14db ，比文獻上報道的gonzalo等人的研究結果提高了4db 。 -
The paper first reviews the research background and actuality of the filter " s design in china and other country, introduces the meaning of the project and the work of the paper, narrates the theory of the switched - capacitor network and the basic switch building blocks, analyses the related factors of the design of sc filter. such as the selection of the architecture, the trade off of the opamp " s gain, bandwidth, phase margin, slew rate and setting time, the effect of the switch " s on resistor, how to reduce the charge injection and the clock feed - through, the power consumption and the selection of the sampling frequency and so on
本文首先回顧了濾波器設計的國內外研究背景和現狀，介紹了本課題提出的意義以及本文的主要工作，論述了開關電容網路原理和基本開關模塊，分析了開關電容濾波器設計的相關因素：電路結構的選擇，對運算放大器設計中高增益、寬帶寬、相位裕度、轉換斜率和建立時間等的折中考慮，開關的打開電阻對電路的影響，開關電容電路中怎樣減少電荷注入和時鐘饋通，以及整個電路的功耗問題和采樣頻率的選擇等。 -
Based on our theoretical predictions, we find optimal splicing parameters on fsm - 30s fiber splicer for low loss joints between erbium doped fiber and other single mode fibers. we also experimentally demonstrate a novel three - stage erbium - doped fiber amplifier with high gain, low noise figure, and high output power. finally, a prototype of a gain - clamped fiber amplifier is obtained with high gain ( 26 db ), low noise figure ( 5. 3 db ), high output power ( 17 dbm ), and large bandwidth ( 31 nm )
文章研究了摻鉺光纖（ edf ）與其他光纖低損耗焊接問題，得到光纖熔接機低損耗熔接的最佳參數，這對摻鉺光纖放大器的科研生產具有一定的指導意義；研究了新型的三段級聯泵浦優配的摻鉺光纖放大器的優化光路結構，得到高增益，低噪聲，大輸出功率的摻鉺光纖放大器；最後研製成功高增益（ 26db ） ，低噪聲（ 5 . 3db ） ，大輸出功率（ 17dbm ） ，寬帶（ 31nm ）增益箝制摻鉺光纖放大器樣機。 -
The influences of electron beam and rf system parameters, magnetic field on output power, efficiency, bandwidth and gain are discussed
研究了電子注參量、高頻輸入功率及頻率、外部磁場等對互作用效率、輸出功率及頻帶的影響。 -
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 。 -
With the advantages of high gain and output power, low noise, wide bandwidth as well as no relation with polarization, edfa changes the traditional optical - electrical - optical relay mode step by step in many fields, and becomes an indispensable device in modern optical communication systems. it saves the expensive cost in optical - electrical transition, makes equipment easy to operate and maintain
由於其本身具有高增益、高輸出功率、低噪聲、帶寬寬、與偏振無關等優點，在很多領域和場合， edfa正逐步取代傳統的光-電-光中繼模式，省去光電/電光轉換的昂貴成本，便於設備的運行維護，成為現代光纖通信系統中不可缺少的關鍵部件。 -
Based on the acoustic energy flow detection, the spatial energy flow suppression can obtain time - space gain in direct proportion to time - bandwidth product, which is just the main advantage of the vector transducer
基於矢量水聽器的聲能流檢測器利用空間聲能流抵消技術相對于聲壓檢測器可獲得與時間帶寬積成正比的時空增益。 -
By formula about effective bandwidth, he get the bandwidth near 1540 nm wavelength, which is 64. 54nm. the bandwidth is more bigger than the gain bandwidth of er - doped silica fiber and fluoride fiber amplifier ( 20nm - 30nm ). it is useful to improve transmitted capacity of information in fiber
對1540nm處光譜有效帶寬的計算，得到結果為64 . 54nm ，這個帶寬已遠高於目前常用摻er硅光纖和氟化物光纖放大器的20 - 30nm增益帶寬，于擴大光纖信息傳輸容量有很大益處。 -
By a large amount of calculations, the influence of the structure dimensions and the dielectric parameters on dispersion characteristic and coupling impedance of this kind of slow - wave structure is obtained. then, the linear beam - wave interaction theories of the arbitrarily - shaped helical groove waveguide and the dielectric into the arbitrarily - shaped helical groove waveguide are deduced. by the numerical calculations, the relationship is got between the small signal gain, bandwidth, electromagnetic " hot " velocity and the electronic beam, the structural parameters
通過數值計算，獲得了此類慢波結構的色散特性和耦合阻抗隨結構幾何尺寸和介質參數的變化規律;在此基礎上，建立了任意槽形螺旋槽及中心加介質棒的任意槽形螺旋槽行波管的注-波互作用線性理論，並編製程序，計算了管子的小信號增益、帶寬、電磁慢波的「熱」相速與電子注參數、結構參數之間的關系，獲得了增加帶寬或增益的途徑。 -
Hfets ( modulation doped ) : modfets ? basic device, theory. deep level problem ( transconductance collapse ) ; pseudomorphic solution. telecommunications applications ? key features : gain, bandwidth, linearly, noise
調節摻雜場效電晶體-基本元件，理論。深能階問題（電導崩塌）與假晶方案。通訊應用-主要特點：增益，頻寬，線性度，雜訊。 -
Through the design the dc feed network, input matching network for the ne900175 gaas fet and analysis the stabilization, power gain, bandwidth of the power amplifier we get the power amplifier is stability, the power gain is 11. 967db and the bandwidth is 300mhz. microstrip antenna has a narrow bandwidth, in this design antenna ' s bandwidth is 100mhz. antenna is the not only the load of the power amplifier, but also as the filter connecting to the output of the power amplifier
E類功放的pae相對a類、 b類、 ab類的功率放大器類型而言比較高，在50 ? 70 。分析了e類功放的工作過程后，以ne900175的gaas場效應管作為e類功放電路的開關，進行了外圍電路的設計，包括直流偏置電路、輸入匹配網路的設計，功放的穩定性、帶寬、增益的分析。該功放增益最大達到11 . 4db ，帶寬為320mhz 。 -
Firstly, a two - stage structure for the ota is presented after comprehensive considerations on characteristics like open - loop gain, unity - gain bandwidth, phase margin and settling time. then the input and output topologies have been decided by comparing different structure available for this purpose
首先，通過對ota開環增益、單位增益帶寬、相位裕度和建立時間等性能指標的分析，並對比了幾種典型運放結構，設計開發了一種cmos全差分共源共柵兩級運算放大器框架。 -
Mid band gain bandwidth
中間帶寬增益頻寬 -
With the rapid growth of all - optical and high - speed networks, the gain bandwidth of a conventional c - band edfa cannot satisfy the requirement of a dwdm system. furthermore, the gain of each channel will change dynamically with the network reconfiguration for a uniformly broadened edfa, which will finally influence the stability of the communication system
隨著光纖通信向全光高速網路系統的深入發展，傳統的c - bandedfa的增益帶寬已經不能滿足dwdm系統的要求，而且這種以均勻展寬為主的edfa會隨網路的動態重構引起進入edfa的通道的增益不斷變化從而影響系統的工作穩定性。 -
Ytterbium ( yb ) - doped silica fibers have a broad - gain bandwidth ( 850 ~ 1050nm ), excellent power conversion efficiency, and a broad - absorption bandwidth ( 900 ~ 1200nm ). their ability to provide amplification over the very broad wavelength range from ~ 975nm to ~ 1200nm is expected to generate increasing interest in the near future. they offer an almost ideal gain medium for the fiber lasers and fiber amplifiers that work at the wavelength around 1 m
摻鐿石英光纖具有幾個方面的優點，如能級結構簡單，與摻er3 + 、 nd3 +等稀土離子的光纖相比，不存在對泵浦光或信號光的激發態吸收（ esa ） ，可以有更高的摻雜濃度;有較寬的吸收光譜（ 850 ~ 1050nm ） ，可以利用多種泵浦光源來設計泵浦方案;輻射光譜寬（ 900 ~ 1200nm ） ，激光輸出波長可以有很寬的可調諧范圍。 -
Gain - bandwidth product
寬頻增益器 -
Key words operational amplifers, gain - bandwidth product, circuit - mode, active filter
關鍵詞運算放大器，帶寬增益積，電流型，有源濾波器 -
It does not need any matched components to reach high cmrr and its bandwidth is not gain - bandwidth product limited
該結構不需要任何精確匹配的電阻就能達到高的共模抑制比，並且其帶寬不受帶寬增益積的限制。
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