求助IEEE文献一篇

琉璃静子

求助IEEE文献一篇
【作者(必填)】 H.Qiuting，W.Sansen，M.Steyaert，and P.van Peteghem
【文题(必填)】 Design and implementation of a CMOS VCXO for FM stereo decoders
【期刊名,年份,卷(期),起止页码(必填)】 IEEE J.Solid-State Circuits，vol.23，pp.784-793，June 1988
【全文链接或数据库名称(选填)】 IEEE

Areky

Abstract — Crystal-controlled oscillators exhibit excellent freqnency stability due to the intrinsic high-quality factor of the resonator. If voltagecontrolled oscillators (VCO’S) can be realiied rising crystal oscillators, precise free-running frequency can be obtained. However, tuning the frequency of crystaf oscillators requires a large variable capacitance which is difficult to realize in standard CMOS technology. A novel circuit technique is developed in this paper to simulate large variable capacitance of both positive and negative polarities over a given frequency range. The simulated capacitance can be varied by voltage control from – 60 to + 100 pF. The capacitor simulating circuit is connected in paraflel with a resonator to tune its parallel resonance. An oscillator with grounded resonator is also developed. Together with the variable capacitor, a voltage-controlled crystaf oscillator (VCXO) is realized. The oscillation frequency of the oscillator can be varied + 1 percent by voltage control. Detailed anatyses are presented to completely characterize the oscillator with simple expressions. The prototype of the VCXO has been fabricated in a 4- pm standard CMOS process.

hanyang

1# 琉璃静子

rfic168

剛好有用到

rfic168

下載了不錯

uitce2011

thanks for sharing

uitce2011

Areky 发表于 2010-9-1 21:12
Abstract — Crystal-controlled oscillators exhibit excellent freqnency stability due to the intrinsi ...

wow, thank u so much for sharing this information

uitce2011

variable capacitor is such an interesting topic

uitce2011

do you have any papers talking about variable capacitor?

uitce2011

if yes, please share