题目/Title：A Low Gain VCO with Varactor Based LC-tank for NB-IoT Application

作者/Author：
                        Zhangcai Liu,Haigang Feng,Ning Zhang

会议/Conference：EDSSC 2019

地点/Location：Xi'an, China

年份/Issue Date：2019.12-14 June

页码/pages：pp. 1 - 2

摘要/Abstract：
An LC-VCO with low and constant KVCO in TSMC 55nm CMOS is designed for NB-IoT application. Capacitors used in LC resonator are solely comprised of varactors. The VCO covers 3GHz-4GHz frequency range and shows a constant KVCO around 35 MHz/V with only 2.6% variation. The phase noise at the center oscillation frequency of 3.5GHz is -122.1dBc/Hz @ 1MHz with 1.78mA current under 1.2V supply, leading to a superior FoM of -190dBc/Hz.