Extended-resonant output matching design for 24GHz transformer-coupled CMOS VCO

IEICE Electronics Express

Chiung-Feng Tai¹  Hwann-Kaeo Chiou¹ 

[1] Department of Electrical Engineering, National Central University

关键词: transformer feedback;    tuned-input tuned-output VCO;   

DOI  :  10.1587/elex.9.1153

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)An extended-resonant output matching circuit was proposed to enhance the negative conductance, output power and phase noise of a 24GHz transformer coupled voltage controlled oscillator (VCO). The circuit was realized by a capacitive stub-loaded resonator in a voltage boosted scheme to steepen the phase slope of the oscillator. The designed VCO achieved a peak output power of +1.5dBm at 23.82GHz and a phase noise of -117dBc/Hz at 1MHz offset frequency. Meanwhile, the VCO exhibits the excellent monotonic and constant frequency tuning characteristics with nearly flat output power.

【 授权许可】

Unknown