A Transformer-Based Current-Reuse QVCO With an FoM Up to-200.5 dBc/Hz

作者：Wang Ping Yi; Su Guan Yu^*; Chang Yin Cheng; Chang Da Chiang; Hsu Shawn S H

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2018, 65(6): 749-753.

DOI：10.1109/TCSII.2017.2776319

• Quadrature voltage-controlled oscillator (QVCO)
• current-reuse
• transformer feedback
• self-switching biasing

A high performance X-band quadrature voltage-controlled oscillator (QVCO) is presented. The transformer feedback topology is proposed to combine with the interactive self-switching current bias technique, which can achieve a low phase noise while maintaining low power consumption simultaneously. The measured phase noise is -123.84 dBc/Hz at 1-MHz offset with a 10.56 GHz carrier frequency and the IQ phase error is less than 1.9.. Under a power consumption of 2.4 mW, the proposed QVCO in 0.18-mu m CMOS achieves an excellent FoM up to -200.5 dBc/Hz, which is among the best compared with previous works using a similar technology.

• 出版日期2018-6
• 单位清华大学