Sinusoidal-switched serial-coupled CMOS LC quadrature VCO

IEICE Electronics Express

Abumoslem Jannesari¹  Mahmoud Kamarei¹ 

[1] Integrated Circuits and Systems Laboratory, University of Tehran

关键词: quadrature voltage-controlled-oscillator (QVCO);    coupled-oscillators;    phase noise;    impulse-sensitivity-function (ISF);   

DOI  :  10.1587/elex.4.423

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)Cited-By(3)A new topology to design low-phase-noise low-power quadrature voltage-controlled-oscillator (QVCO) is proposed. The proposed topology is based on using a dynamic transistor biasing scheme in a typical voltage-controlled-oscillator (VCO). This method modifies the equivalent impulse-sensitivity-function (ISF) of oscillator to reduce the oscillator sensitivity to noise sources and as a result reducing the oscillator phase noise. A 1.8GHz, 1.8v designed QVCO with 0.18u CMOS technology based on the proposed topology shows a phase noise of -134dBc/Hz at 1MHz offset frequency from the carrier.

【 授权许可】

Unknown