In this paper, a fully integrated sub threshold LC voltage controlled oscillator (VCO) is presented. A design methodology is also proposed to find the optimal parameters lowering the power consumption. This methodology has been applied to design oscillators for different frequency bands. Furthermore, an adaptive body biasing technique has been used to improve the startup constrains and allows a high immunity to PVT (process, voltage and temperature) variations. A VCO operating in 5 GHz ISM (Industrial, Scientific and Medical) band has been realized with the proposed methodology in 0.13 μm CMOS. It consumes only 468 μW from 0.39 V supply voltage. This makes it possible to meet the required specifications of autonomous connected objects and IoT applications. The measured oscillation frequency can be tuned from 5.14 to 5.44 GHz. The obtained phase noise is approximately equal to − 112 dBc/Hz in post-layout simulation (PLS) and − 104.5 dBc/Hz in measure.

本文提出了一种完全集成的亚阈值LC压控振荡器（VCO）。还提出了一种设计方法，以找到降低功耗的最佳参数。该方法学已被用于设计不同频带的振荡器。此外，已经使用自适应主体偏置技术来改善启动约束，并允许对PVT（过程，电压和温度）变化具有较高的抵抗力。使用建议的方法在0.13μmCMOS中实现了在5 GHz ISM（工业，科学和医学）频带中工作的VCO。它在0.39 V电源电压下仅消耗468μW。这使得可以满足自主连接对象和物联网应用程序的要求规范。可以将测得的振荡频率从5.14 GHz调整到5.44 GHz。在布局后仿真（PLS）中，所获得的相位噪声大约等于− 112 dBc / Hz，而在测量中大约等于− 104.5 dBc / Hz。