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变容

"变容"的翻译和解释

例句与用法

  • The frequency of the pulse is the same as that of the crystal oscillator . the pulses sampled the output of the vco and generate the error signal . the error signal is amplified ,
    误差电压经放大后送入环路滤波器进行滤波和再放大,然后去改变变容管偏置电压,控制振荡器输出频率,达到稳频的目的。
  • With the rapid advancement of process and technology , especially the realization of on - chip passive elements such as inductors and varactors , the on - chip implementation of voltage - controlled oscillators ( vcos ) which are necessary in wireless transceivers has become easy
    在工艺技术的飞速进步下,尤其是电感和变容管等无源器件片上实现问题的解决,压控振荡器已经可以实现单片集成,这对降低收发机的成本十分关键。
  • Compared with gunn diode , mesfet has the advantage of high efficiency , flexible design and easy to integrate . the two ports negative resistance oscillating network is analyzed and an extremum - line model of microwave transistor oscillating network output impedance is developed
    Mesfet较之gunn二极管在vco电路中有效率高、设计灵活性、便于集成等优点,所以本文着重介绍了变容管调谐微带结构mesfetvco的研制工作。
  • First of all , single port negative impedance oscillator is analyzed in the thesis . a design method of gunn diode vco is introduced and an vco chip using gunn diode is fabricated . the substrate of the vco chip is gaas with dimension of 4 . 4mmx3 . 9mm
    本文首先对单端口负阻振荡器进行了分析,给出了gunn二极管负阻振荡器的设计方法,设计出了一个变容管调谐平面微带gunn二极管vco芯片,该芯片以gaas为衬底,尺寸为4 . 4mm 3 . 9mm 。
  • On account of the low q - factor and small tuning range of the p - n junction varactor , the inversion - mode mos varactor is used in the lc voltage controlled oscillator in this thesis . the simulation results show that the designed lc voltage controlled oscillator has 15 % tuning range
    3 .由于lc压控振荡器中的pn结变容管品质因数低、调谐范围小,本次设计的lc压控振荡器采用了强反型mos变容管,仿真结果表明,所设计的lc压控振荡器具有15 %调谐范围。
  • This paper realized frequency modulation using the video signal to directly control the resonance loop ' s diode of the vco at the early stages , and then through using radio frequency bipolar junction transistor , designed a lc voltage controlled oscillator which was emulated by advance design system . in addition , it also implemented the design and debugged the hardware circuit
    本文第一次实验采用视频信号直接控制vco谐振回路变容二极管的方式实现频率调制,并且利用射频双极性晶体管( bjt )设计了一种lc压控振荡器,通过ads软件进行了参数仿真,最后进行了硬件电路的制作和调试。
  • The goal of this subject is to sum up and exploit our technique how to produce low phase noise wideband vcos , through investigating and studying the basic theory and recent research fruits , combining national condition , and produce our low phase noise wideband vcos . using high q components , such as : coaxial resonator , dielectric resonator , makes bandwidth of vco become narrower , so that recently common wideband vcos generally make inductor and capacitor ( lc ) as resonators , combining varactors with wide range tunable capacitance , and achieve the wideband
    本课题旨在通过对低相噪宽带vco的基本原理、国内外在这方面的进展,结合国内的实际情况进行研究,总结和开发出自己的方法,形成自己的理论。并把它运用于实践,以制造出低相噪的宽带vco 。由于加入高q元件,如:同轴谐振器、介质谐振器等,会导致振荡器带宽比较窄,目前的宽带vco一般采用电感电容( lc )作为谐振元件,辅之以大变容范围的变容二极管,达到宽带的目的。
  • It also gives the motive of the ka - band vco and mixer , associated with the subject ' s requirement and the realistic conditions , according to which a proposal is confirmed that the gunn diode and the varactor are mounted in the same cavity to fulfill the vco and an antiparallel diode pair is used to fulfill the harmonic mixer . in chapter 2 , based on the basic theory of negative resistance oscillating , we analyses the gunn oscillator and it ’ s tuning character . chapter 3 introduces the theory of millimeter - wave harmonic mixer
    以此为根据结合课题需要和实验室的实际条件,确定vco采用耿氏管腔体振荡器形式,变容管与耿氏管安装在同一个腔内以进一步减小体积,采用反向并联二极管实现谐波混频;第二章介绍负阻振荡器理论及其调谐原理;第三章介绍毫米波谐波混频器基本原理;第四章给出了振荡器及谐波混频器的设计过程,整个组件联调的结果;最后是结束语,分析了电路中存在的问题,指出了改进方向。
  • Vco ’ s theory and parameters especially for the basic mechanism of phase noise are studied . the parasitic effects of rf - ic passive devices such as inductors and varactors and the design guidelines for the on - chip spiral inductors are included too . the accumulation - mode varactor , which has a higher quality factor value than the inversion - mode mos varactor , is studied in detail
    研究电感和变容管这两种射频集成无源器件的寄生效应和射频mos晶体管的热噪声模型,提出集成电感的设计原则和优化方法,详细研究了一种新型的积累型mos可变电容,这种积累型mos变容管比一般的反型mos变容管有更高的品质因数。
  • To give a introduction about the achievements of national center of laser technology , beijing polytchnic university ( nclt ) on the research referred to laser technology till now and some of them such as laser cladding , laser welding , laser cutting and the application of laser processing have been made their application in the enterprises of china
    本文提出了一种保持变容二极管调频电路在高、低温环境下载频稳定的温度补偿方法,介绍了补偿方法的基本原理,给出了电路模型,通过实验对实际电路进行了分析与标定.该方法简洁实用,有很广的应用范围
  • 更多例句:  1  2  3
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