题目/Title：A Relaxation Oscillator with Multi-Phase Triangular Waveform Generation

作者/Author：吕航,周波,李宇根,李永明,王志华
                        Hang Lv,Bo Zhou,Woogeun Rhee,Yongming Li,Zhihua Wang

会议/Conference：ISCAS 2011

地点/Location：Rio de Janeiro, Brazil

年份/Issue Date：2011.15-18 May

页码/pages：pp. 2837 - 2840

摘要/Abstract：
This paper firstly presents a CMOS voltage-controlled oscillator (VCO) which enables octa-phase triangular waveform generation. By utilizing a cascaded relaxation oscillator core followed by a pseudo injection-locked oscillator circuit, an octa-phase differential VCO with triangular waveform outputs is realized. Simulation results show that the proposed fully differential multi-phase VCO can achieve broad tuning range with programmable timing capacitors, offering <1% phase mismatch.