查询词典 varactor

As quality factor of varactor rises, phase noise of voltage controlled oscillator will drop.

当可变电容的品质因素上升，振荡器的相位杂讯就会下降。

In this paper,a new model of Gunn diode VCO is established on the basis of computing the coupling disc capacitance between Gunn diode land varactor using spectral-domain Hankle transformation.

本文建立了一种新的 Gunn VCO 的电路模型，计算了 Gunn 管和变容二极管之间的径向盘耦合电容。

Gunnplexers occur in two types, the common homodyne, or motion detectors,and the varactor tuned type, used for communication.

耿儿（Gunnplexer有两大类，普通的简单型和通讯用的带变容管的类型。

The frequency is con- trolled by a voltage applied to the TUNE pin, which is internally connected to the varactor.

该频率为本位的应用到调谐脚，这是内部连接到变容二极管的电压。

First of all, the character of the microstrip transmission line is introduced. Then the character of the PN-varactor dioide and the principle of frequency multiplier are studied.

而后介绍了PN结变容管的特性及变容管倍频器倍频原理，这是研究非线性电抗倍频器的理论基础。

With the propagation of the input negative-falltime pulse along the transmission line, the capacitance of varactor diodes is decreased by the increase of reverse bias voltage, and the variation in propagation delay at the nodes results in the compression of negative-going wavefronts during propagation.

随着输入脉冲在传输线上的传播，变容二极管的电容随反偏压增大而减小，导致每个节点传播延迟的变化，从而压缩脉冲波前，产生前沿可达1ps的超快脉冲。

In this dissertation, the nonlinearity of the MOS varactors caused by the large output signal of the DCO, as well as its influence on the performance of the DCO, is analyzed. A back-to-back in series digitally controlled MOS varactor is presented to avoid the nonlinearity of the varactors of the DCO.

对DCO大信号工作时所引起的数控MOS变容管的非线性以及这种非线性对DCO性能的影响进行了分析，提出了改善这种非线性的背靠背串联数控MOS变容管的新结构，可以使DCO的相位噪声最多降低8.1dB。

The appendix introduces testkeys of high quality factor varactors for radio frequency voltage controlled oscillator's application. The purpose of designing the varactor is by changing L, W within models in order to get high quality factor.

附录部份则是介绍应用於射频压控振荡器的高品质因素可变电容之测试键，设计这个可变电容模型的重点在於能改变模型内部的长、宽来达到高的品质因素。

The feasibility of a varactor-based adaptive matching network for antenna mismatch correction is investigated. A LC-resonator-based Π-section network is optimized for its performance, in terms of operation power gain, Smith Chart coverage, and effective capacitance tuning range of the varactors.

对适用于天线失配修正的基于可变电容构建的自适应匹配网络进行了可行性分析，重点对基于LC谐振腔所设计的Π型匹配网络从功率增益、史密斯圆图覆盖率和可变电容有效调谐范围几个方面进行了性能优化。

In this dissertation, the research and design of DCO is conducted and the principal contributions are as follows.In this dissertation, the non-ideal characteristics of traditional MOS varactors used in the DCO are analyzed, and an inversion-mode digitally controlled MOS varactor is proposed to alleviate the non-ideal characteristics. The phase noise of the DCO using inversion-mode varactors can be up to 9.5 dB lower than that of the DCO using traditional MOS varactors.

本论文针对应用于CMOS无线通信收发机的新型全数控LC振荡器，完成了以下工作：分析了DCO所使用的普通数控MOS变容管中所存在的非理想特性，提出了使用反型数控MOS变容管改善这一非理想特性的方法，该方法可以将DCO中的相位噪声最多降低9.5dB。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的