Design of Highly Linear,1GHz 8-bit Digitally Controlled Ring Oscillator with Wide Tuning Range in 0.18um CMOS Process
This paper presents a simple architecture for8-bit digital controlled oscillator (DCO) on 3-stages ringtopology in TSMC 0.18urn CMOS technology.A newschematic of tristate inverter is also proposed.The proposedtristate inverter has higher switching speed andlow power consumption as compared to conventional one.The control digit changes the driving current that provideslarge tuning range from 316 MHz to 1165 MHzwith very good linearity.The output voltage swing is alwaysgreater than 1.6V while the supply voltage is 1.8V.The proposed DCO has simulated phase noise of-114dBc/Hz @1MHz and 23.2mW power consumption at1.0 GHz central frequency.
ring oscillator DCO inverter phasenoise linearity power consumption.
R.K.Pokharel A.Tomar H.Kanaya K.Yoshida
Graduate School of Information Science and Electrical Engineering Kyushu University,Fukuoka 819-0395,Japan
国际会议
2008 China-Japan Joint Microwave Conference(2008年中日微波会议)
上海
英文
623-626
2008-09-10（万方平台首次上网日期，不代表论文的发表时间）