这封信介绍了一种具有新启动电路的低相位噪声正交环形振荡器。 振荡器架构是两级差分环,带有一对额外的过渡辅助晶体管。 该电路采用0.18CMOS技术实现,原型器件的测得调谐范围为1.7 GHz至5.5 GHz,品质因数(FOM)为。 拟议的应用领域是本地振荡器在多标准无线收发器中的核心。索引词:本地振荡器,多标准无线收发器,相位噪声,正交环形振荡器
This letter presents a low phase noise quadrature ringoscillator with new start-up circuit. The oscillator architecture isa two-stage differential ring with an additional pair of transitionassistance transistors. The circuit was implemented in 0.18CMOS technology and the measured tuning range of the prototype device is from 1.7 GHz to 5.5 GHz and figure of merit (FOM)is . The proposed area of application is the core of thelocal oscillator in a multi-standard wireless transceiver.Index Terms—Local oscillator, multi-standard wireless transceiver, phase noise, quadrature ring oscillator
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