Transformer feedback millimeter-wave VCO with capacitance cancellation technique in 0.18-µm CMOS

IEICE Electronics Express

Abdolreza Nabavi²  Milad Ataei²  Amir Nikpaik²  Javad Meiguni¹ 

[1] K.N. Toosi University of Technology;Microelectronics Lab., Tarbiat Modares University

关键词: millimeter-wave;    VCO;    transformer feedback;   

DOI  :  10.1587/elex.8.780

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(11)This paper describes a design procedure for mm-wave voltage controlled oscillator (VCO), based on large signal behavior of oscillator transconductance. Then, a new structure of LC-VCO is presented, which utilizes a transformer feedback to enhance the transconductance of the core transistors and to cancel the undesired parasitic effects. Using a 0.18-µm RF CMOS technology, the advantage of this VCO is examined by large signal analysis and simulation. The results illustrate improvement of 5dB in phase-noise and 70% in tuning-range, compared to enhanced active gain conventional transformer feedback VCO. Finally, a compact layout for transformer design is proposed.

【 授权许可】

Unknown