A Large Tuning Range Ring VCO in 180nm CMOS
The phase noise requirements is decreased in some applications of short-range communication,data rates are low,and the channel spacing wide.This make a voltage-controlled ring oscillator is widely applied which need smaller chip area and larger tuning range.In the other hand the low supply voltage is trend of the electronic communications.Thus a large tuning range ring VCO base on a different cascade voltage logic delay cell is presented,which is suitable for low supply voltage.The delay cell is composed of a differential pair of NMOS transistors with a cross coupled load PMOS transistors,along with two PMOS transistors who change the current of output node.A new typical structure is suit for low supply voltage with large tuning range and less transistors.In SMIC 180-nm CMOS process,simulation results show the maximum oscillator frequency of the ring VCO is 6.9GHz and the tuning range is from 75MHz to 6.9GHz with a worse phase noise level of 101.1dBc/Hz at an offset of 10MHz.Its maximum average power consumption is 5.18mA from 1.8V power supply and the minimum average power consumption is 0.10mA from 0.7V power supply.The core area is 50 μm×35 μm in a 180-nm CMOS process.
Xuemei Lei Zhigong Wang Lianfeng Shen Keping Wang
School of Information Science and Engineer,Southeast University Sipailou 2,Nanjing 210096,China;Coll School of Information Science and Engineer,Southeast University Sipailou 2,Nanjing 210096,China University of Washington,USA
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
1147-1149
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）