查询词典 varactor

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。

The main production and sales varactor diode and integrated circuit IC.

主要生产销售变容二极管和集成电路IC。

A range of silicon varactor diodes for use in frequency control and filtering.

一种频率控制和过滤的使用范围硅可变电容二极管。

This technology is used to produce abrupt tuning varactor in SOT23 package.

这项技术是用来生产SOT23封装突然调谐变容二极管。

It analyses the physical structure and electrical characteristic of varactor and introduces the general theories and typical circuit of electric tune filter.

本文对变容二级管的物理结构和电特性进行了分析，介绍了电调谐滤波器的一般理论和典型电路。

The inductor and varactor elements of the tank are integrated on-chip, greatly simplifying application of the part.

芯片结合了感应器和变容二极管的tank原理，大大简化了应用部分。

The skin effect of the varactor series resistance is considered and the designing approach of the double-tuned signal circuit discussed as well.

本文叙述了用于卫星通讯地面站的4千兆赫非冷参放的电路设计，考虑了变容二极管串联电阻趋肤效应的影响以及讨论了双调谐信号电路的设计方法。

In the early days of FM, there were no varactor diodes so it was difficult, at best, to produce a direct FM modulator.

在早期进行调频FM时，还没有变容二极管，那时很难生产出一个直接FM调制器。

Oscillator ; Model ; Nonlinear analysis ; Optimization ; Varactor

振荡器；模型；非线性分析；优化；变容二极管

In chapter 3, the general circumstance of microwave oscillator with dielectric resonator and electronic tuning are introduced, and we analysed the principles and methods of design, then we discussed the principles and designing methods of varactor diode tuning according to the principle of the FET oscillator.

第四章先介绍了FET倍频器和放大器的基本理论，然后介绍了分析设计倍频器和放大器的两种重要的方法：谐波平衡法和S参数法。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。