amplifer 中文意思是什麼

amplifer 解釋
類放大器
  1. The basic principle, main properties, typical parameters, technical characteristics and general situation of klystron are introduced. the electron beam prebunching in the modulated cavity and shift tube of relativistic klystron amplifer ( rka ) is studied analytically, a self - consistent equation of radiation generated by the prebunched electron beam in the radiation cavity is derived using the field method of particle ? wave interaction instead of the electrical circuit method, and in terms of it, the gain in the linear regime calculated, a field analysis method is proposed. the theory analysis shows that the characteristic parameters, such as resonance frequency, real part of gap - impedance, external quality fadtor in all kinds of klystron output circuits including single - beam, multi - beam, single - gap, multi - gap, single - beammulti - gap, multi - beam multi - gap klystron output circuit, can be calculated by the field analysis method

    本文系統的介紹了速調管的工作原理、主要特點、發展概況、主要性能指標和技術特點，解析的研究了電子束在相對論速調管放大器的調制腔和漂移管中的預群聚;用粒子波互作用的場方法導出了在輻射腔中預群聚電子束產生輻射的自洽方程，同時對線性區的增益進行了計算。理論分析表明，場分析法可用於計算單注單間隙、多注多間隙、單注多間隙和多注多間隙速調管輸出迴路的諧振頻率、間隙阻抗實部和外觀品質因數等特性參數。
  2. In modern wireless communication, high linear broadband amplifer is necessary and play a critical role, and even the whole communication system will be affected by its performance

    隨著當代無線技術的發展，微波寬頻帶放大器已經成為無線通信系統的關鍵組成部分，其性能好壞將影響整個通信系統的性能。
  3. Abstract this paper gives two kinds of single operational amplifer ? current - mode active filter circuits. they can realize lowpass, highpass and ? bandpass without changing circuit topology and element

    摘要提出兩種使用單運放的電流型濾波電路，每種電路均可同時實現帶通、低通和高通濾波功能
  4. The device is also widely used to measure the amplitude frequency characteristic of instrument in the tv - broadcastiong field, such as filter, amplifer, ect

    該儀器主要針對高頻調諧器的測量，也可用於廣播電視領域中濾波器件、放大電路等的生產測試。
  5. Also, by using the hot - carrier immiunity analog circuit structure, the output resistance degradation caused by the hot - carrier degradation is deeply supressed and the small - dimensional effect can be improved shown by the spice 3f5 simulation results, and the gain degradation of a cmos o peration amplifer after 10 years operation decreases from 23 % to 10 % with this structure according to bert2. 0 simulation

    而串聯常開n mosfet的模擬電路結構可使n mosfet輸出電阻的退化大為減小同時還可改善器件小尺寸效應引起的輸出電阻下降：採用該結構的os運放與未採用的相比，其十年工作后增益的退化由23下降為10 。
  6. This subject aim at designing a series of several octaves band and low noise figure middle power mini - package amplifer which frequency include 1 - 8ghz 、 1 - 18 ghz and 5 - 10ghz band, using non - packaged gaas phemt and mic technology, under the basic of analyzing and searching broadband matching technology

    本文所報道的系列微波放大器具有多倍頻程帶寬、低噪聲、中功率、微封裝等特性，工作頻段包括1 - 8ghz 、 1 - 18ghz 、以及5 - 10ghz 。
  7. Bi - directional trunk amplifer

    雙向干線放大器
  8. In modern wireless communication, linear power amplifer is necessary and play a critical role, and even the whole communication system will be affected by its performance

    在當代無線通信系統中，線性功率放大器是必不可少而且也是非常關鍵的部分，其性能的好壞將影響整個通信系統的指標。
  9. This subject aim at designing a linear power amplifer whose output power is 40w for 225 - 450mhz band. but it seems not easy to finish the task because of this power amplifier own unique requirements including high output power, broad working frequency band, high linearity, and flat gain. due to the complexity involved, theoretically several soltuions are derived in the final scheme such as broadband matching technology, power - retreat, power synthesize, automatic power control and negative feedback. in addition, the design will be optimized by eda software and the final test result indicates that our design is successful

    本課題的目標是研製一個輸出功率為40w的225 450mhz的線性功率放大器。由於該功放要求輸出功率大，工作頻帶寬，帶內增益波動小，線性度高，所以其終合設計難度大。鑒于這個原因，在理論設計上筆者採用了寬帶匹配、功率合成、功率回退、負反饋、自動功率控制等技術；在實踐中精心設計電路，並且配合eda軟體模擬，最終達到所要求的指標。
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