標題: Back-Gate Coupled Current-Reused QVCO with Modified STM Technique
作者: Chiu, Po-Ju
Wu, Kuan-I
Jou, Christina F.
電信工程研究所
Institute of Communications Engineering
關鍵字: CMOS integrated circuits;current-reused;modified STM technique;quadrature VCO (QVCO);radio frequency (RF)
公開日期: 1-Jan-2010
摘要: In order to achieve low power consumption, many improved VCO schematics were proposed. However, although the problem of power consumption has been improved, the amplitude imbalance of the output signals is relatively larger than the conventional cross-coupled VCO. Therefore, a new modified STM technique to improve the amplitude imbalance of VCO is presented. The measured amplitude imbalance ratio is less than 0.2%. It reduces from 1.7% of the VCO without modified STM technique. This back-gate coupled current-reused QVCO has been implemented using the TSMC 0.18um mixed signal/RF CMOS IP6M technology and the die area is 0.84x1.1mm(2). The measured phase noise at 1MHz offset is 117.4dBc/Hz at the oscillation frequency of 5.0 GHz. The figure of merit (FOM) of the proposed QVCO is -184.1 dBc/Hz.
URI: http://hdl.handle.net/11536/146392
期刊: 2010 ASIA-PACIFIC MICROWAVE CONFERENCE
起始頁: 1047
結束頁: 1050
Appears in Collections:Conferences Paper