题目/Title：Design of ultra wideband MOS differential VCO

作者/Author：
                        Yanqing Ning,Zhihua Wang,Hongyi Chen

会议/Conference：ASICON 2005

地点/Location：Shanghai, China

年份/Issue Date：2005.24-27 Oct.

页码/pages：pp. 441 - 445

摘要/Abstract：
This paper discusses the MOS differential VCO under tuning situation and shows that the coefficient shifting in the differential equation is another restriction to the tuning range besides the tuning range of the LC tank. In respect of this point of view, a new topology is adopted to breakdown the VCO's tuning range bottleneck. The simulation result shows that f max/fmin of the new circuit can reach 10.