CMOS Cross-Coupled VCO Architecture Comparison at 2GHz and l6GHz

摘要：

This paper presents a comparison study between double-switch (DS) and single-switch (SS) crosscoupled CMOS VCO architectures at 2GHz and I6GHz. The oscillators are designed with optimal differential tank oscillation amplitude,which is equal to the threshold voltage of the cross-coupled transistors. Measurement data from prototype oscillators show that the DS architecture can achieve a better performance than the SS architecture at low oscillation frequencies. However,as frequency increases the single-switch architecture outperforms the double-switch counterpart By employing the single-switch cross-coupled architecture with an optimal oscillation amplitude,a high performance 23.5GHz VCO is designed and demonstrated with an FOM of 184 dB,which is the best compared to any reported Si-based VCO in the 20GHz -30GHz frequency range.

关键词： voltage-controlled oscillator (VCO) oscillator architecture optimal VCO design low phase noise low power

作者: Matthew Cross Darrin J.Young

作者单位: Department of Electrical Engineering and Computer Science Case Western Reserve University,Cleveland,Ohio,USA

会议类型: 国际会议

会议名称: 9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)

会议地点: 北京

会议语种:英文

页码: 1601-1604

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）