線頻截止 的英文怎麼說
中文拼音 [xiànbīnjiézhǐ]
線頻截止
英文
cutoff frequency of a line-
The researches have proved the current mode superior to the voltage mode in high - frequency applications. in the paper a general integrator is completed to synthesize a bilinear si filter with a cutoff frequency of 17. 2mhz
電流模技術的研究已經證明其高頻應用中具有優于電壓模技術的特性，文中對通用積分器加以完善，推導出雙線性變換的開關電流濾波器，其截止頻率達到17 . 2mhz 。Chinese composite channels stay in the age of mass - decentralized communication, and they faced a lot of challenges especially from professional channels. there are more than 2000 tv stations and 3000 channels in china however, most of them did not produce satisfied programs to the audience and high efficiency in economy. so more and more scholars focus on professional channels and they believe it is the tendency of developing professional channels
頻道專業化的呼聲越來越高，眾人把目光都投向了專業頻道，尤其是當中國廣電總局《關于有線廣播電視與無線電視臺合併有關事項的通知》下發后，截止2001年7月，全國有線電視臺與無線電視臺合併工作已全部完成，頻道專業發展開始大刀闊斧地進行。In the fourth chapter, a fourth - order chebyshev low - pass filter employs new low voltage, highly linear, wide inputting range transconductor is proposed, then we presents a new circuit to tune gm value of transconductor accurately, which employs a new switched - capacitor circuit to change the bias current of transconductor, a third order elliptical function low - pass filter with accurate tunable frequency has been designed using transconductor that is not only with voltage common - mode negative feedback, but also with varying bias - triode transistors which can improve the linearity of this circuit
第四章：提出了一種新的低電壓、高線性度、寬輸入范圍跨導，並由此設計實現了四階切比雪夫（ chebyshev ）低通濾波器，接著提出了一種寬輸入范圍且具有電壓共模負反饋的全差分跨導，並採用一種新的開關電容電路實現跨導值gm精確可調，從而可以設計得到高性能具有精確截止頻率的跨導-電容三階橢圓函數濾波器。In the fifth chapter, a new fully differential operational amplifier with voltage and current - mode negative feedback has been proposed, which can stabilize its quiescent operation point, using the characteristic of mos transistors which operate in the triode region acting as active variable resistor, a fully differential fourth - order chebyshev low - pass filter with tunable frequency and bessel low - pass filter with accurate group delay based on r - mosfet - c and operational amplifier has been designed
第五章：提出了一種新的既具有電壓共模負反饋又同時具有電流共模負反饋的全差分運算放大器電路，能較好地穩定電路的靜態工作點，並應用mos管工作在線性區可作有源可變電阻用的特性設計得到了截止頻率可連續調節的高性能r - mosfet - c 、運放結構切比雪夫（ chebyshev ）和精確群時延值貝塞爾（ bessel ）低通濾波器。In the paper four usual transformations from s - domain to z - domain are introduced to show the superiority of the bilinear transformation in high - frequency applications. then a novel sc architecture is produced to finish a filter with a cutoff frequency of 17. 8mhz. the accurate bilinear result is reached by dual - rate sampling
文中介紹了四種常用的s域到z域的變換，說明雙線性變換在高頻應用的優點；然後，運用一種新穎的開關電容結構組成濾波器，通過雙采樣的原理導出準確的雙線性變換，其截止頻率達到17 . 8mhz 。Based on the nonlinear paraxial equation and b - t theory, a differential equation, which describes the small - scale self - focusing in gain ( loss ) media has been derived. the change rule of the maximal gain frequency, cutoff frequency and integral exponential gain have been analyzed approximately
我們首先從非線性近軸波方程出發，基於b - t理論的思想，在考慮了介質的增益（損耗）特性的情況下，推導得出了小尺度自聚焦所滿足的微分方程，並通過近似方法分析了最大增長頻率、截止空間頻率及積分指數增益等的變化規律。As for the dynamic performance, the linear variable differential transformer ( lvdt ) displacement sensor using signal conditioner ad598 is not so good, so the differential rectifier is designed as the measuring circuit of the sensor so as to increase its cross - over frequency. also, the static test and dynamic test is made for the sensor along with the lvdt
由於使用線性差動變壓器信號處理晶元ad598為測量電路的差動變壓器式傳感器的動態性能不夠理想，本文設計製作了差動整流電路作為差動變壓器式傳感器的測量電路以提高傳感器的截止頻率，並對差動變壓器式傳感器進行靜態和動態標定。分享友人