A self-correcting quadrature voltage controlled oscillator

IEICE Electronics Express

Tomoyuki Arai¹  Ali Hajimiri² 

[1] Fujitsu Laboratories Ltd.;California Institute of Technology

关键词: CMOS;    voltage controlled oscillator (VCO);    quadrature;    phase error;    phase noise;   

DOI  :  10.1587/elex.11.20140684

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(15)Cited-By(1)A self-correcting quadrature voltage controlled oscillator (QVCO) with phase correcting loop is proposed. It comprises the QVCO core and phase correcting loop, which corrects the quadrature phase error. Two LC VCOs, buffers, and phase shifters are coupled in circular configuration to achieve IQ symmetry. This paper introduces the idea of realizing QVCO with low phase noise and accurate quadrature phase by using the phase correcting loop. The simulation results based on the 65 nm CMOS process show that the self-correcting QVCO has a phase error less than 0.5° and 1 MHz offset phase noise of �?120 dBc/Hz at 3.7 GHz with 49% tuning range.

【 授权许可】

Unknown