Title :
Design of ultra wideband MOS differential VCO
Author :
Ning, Yan-qing ; Wang, Zhi-Hua ; Chen, Hong-Yi
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
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.
Keywords :
CMOS integrated circuits; circuit tuning; integrated circuit design; voltage-controlled oscillators; LC tank; tuning range; ultra wideband MOS differential VCO; voltage controlled oscillator; Circuit optimization; Circuit simulation; Circuit topology; Differential equations; Frequency; Transient response; Tuning; Ultra wideband technology; Varactors; Voltage-controlled oscillators; CMOS; Ultra Wideband; VCO;
Conference_Titel :
ASIC, 2005. ASICON 2005. 6th International Conference On
Print_ISBN :
0-7803-9210-8
DOI :
10.1109/ICASIC.2005.1611355
