Diode switches or voltage controlled varactors implement dual-band resonators such that they can offer low impedance at the second harmonic of each frequency band, while, in some cases, presenting high impedance at the fundamental frequency as an RF choke circuit.

利用二極體開關(guān)或電壓控制變?nèi)萜鲗?shí)施雙頻共振器以提供在雙頻操作中每一個(gè)頻段之二階諧波的低阻抗，同時(shí)在一些實(shí)施例里也提供主頻段的高阻抗、具有射頻阻塞電路作用。

The resonance tank includes four p-n junction diode varactor pairs and a spiral inductor for each differential VCO, and a voltage- level-shift circuitry is utilized to decide proper DC levels for each pair of varactors.

此共振腔由四對(duì)PN接面式可變電容器及一個(gè)螺旋型電感所組成，并有一個(gè)電位偏移電路用來適當(dāng)決定每對(duì)可變電容之偏壓點(diǎn)最近最新2019中文字幕免费视频。

The isolation capabilities of varactors with different structures against substrate noise are investigated in this thesis.

本論文主旨在探討不同結(jié)構(gòu)的變?nèi)萜鲗?duì)於基體雜訊的隔絕能力。

Accumulation varactors are used to widen frequency tuning.The measured tuning range is 23 percent.

可變電容采用增強(qiáng)型MOS可變電容在线看a片欧美，取得了23％的頻率調(diào)節(jié)范圍各种无码走光视频免费。

So we have designed eight varactors on this chip to test the comparison of quality factor of different L, W in the same capacitance.

因此我們?cè)诖司显O(shè)計(jì)了八組的可變電容，測(cè)試在相同的電容值中日韩性交网址，不同長韩国精品无码永久在线观看、寬的品質(zhì)因素之比較。

Accumulation varactors are used to widen frequency tuning.

為了減少高頻噪聲的影響免费一级特黄真人视频，采用了在片LC濾波技術(shù)人人插日日射。

RF MEMS varactors with Electrostatic actuation have become ahot topic in academic research.

利用靜電驅(qū)動(dòng)的RF MEMS壓控電容成為了人們研究的一個(gè)熱點(diǎn)。

In traditional analysis method, the harmonic approximation is employed, and an effective capacitance of varactors during one period is calculated by the large-signal nonlinear analysis.

在傳統(tǒng)的諧波平衡近似方法中91在线资源网，通過大信號(hào)非線性分析方法可以計(jì)算出一個(gè)周期內(nèi)可變電容的有效電容值小草一级黄色网站。

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.

對(duì)DCO大信號(hào)工作時(shí)所引起的數(shù)控MOS變?nèi)莨艿姆蔷€性以及這種非線性對(duì)DCO性能的影響進(jìn)行了分析，提出了改善這種非線性的背靠背串聯(lián)數(shù)控MOS變?nèi)莨艿男陆Y(jié)構(gòu)全色黄大色大片免费久久老太黄色片，可以使DCO的相位噪聲最多降低8.1dB色色色爽爽爽。

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.

本論文針對(duì)應(yīng)用于CMOS無線通信收發(fā)機(jī)的新型全數(shù)控LC振蕩器，完成了以下工作：分析了DCO所使用的普通數(shù)控MOS變?nèi)莨苤兴嬖诘姆抢硐胩匦耘┐謇细韭易勇资悠担岢隽耸褂梅葱蛿?shù)控MOS變?nèi)莨芨纳七@一非理想特性的方法久久国产精品99久久久久久，該方法可以將DCO中的相位噪聲最多降低9.5dB。