华中科技大学学报（自然科学版）2013，Vol.41Issue(2)：48-52,5.
基于恒定漏-源电压的LC-Tank幅度控制方法
Controlling LC-Tank amplitudes based on constant drain-source voltages
摘要
Abstract
According to the principle of voltage-limited and current-limited regimes,an amplitude control for wideband LC-VCOs (inductor capacitor voltgage-controlled oscillators) based on constant drain-source voltages was proposed, whose idea was to adjust the tail biasing voltage based on the drain-source voltage variations, in order to avoid the wideband LC-VCO working in voltage-limited regime and improve the phase noise and save the power. When the proposed amplitude control was used for a LC-VCO with tuning frequency from 1. 52 GHz to 3. 20 GHz, the phase noise were -77. 0 dBc/ Hz and -118. 4 dBc/Hz at frequency offsets of 10 kHz and 600 kHz from a carrier frequency of 3. 2 GHz, which are 8 dB and 1. 4 dB lower than that of LC-VCO without amplitude control. Besides, the maximum power consumption of this LC-VCO is 8. 6 mW.关键词
宽带压控振荡器/幅度控制/恒定漏-源电压/低相位噪声/低功耗Key words
wideband VCOs/ amplitude control/ constant drain-source voltage/ low phase noise/ low power分类
信息技术与安全科学引用本文复制引用
王德志,张科峰,石琴琴,邹雪城..基于恒定漏-源电压的LC-Tank幅度控制方法[J].华中科技大学学报（自然科学版）,2013,41(2):48-52,5.基金项目
国家科技重大专项资助项目(2010ZX03007-002-02). （2010ZX03007-002-02）
