Design of 5 GHz low-power CMOS LC VCO based on complementary cross-coupled topology with modified tail current-shaping technique

作者：Hsu Meng Ting^*; Chen Po Hung; Lee Yao Yen

来源：International Journal of Microwave and Wireless Technologies, 2014, 6(6): 573-580.

DOI：10.1017/S1759078714000300

• VCO
• Low-power
• Q-enhancement
• Body-biasing

In this paper, a low-power CMOS LC voltage-controlled oscillator (VCO) with body-biasing and low-phase noise with Q-enhancement techniques is presented. A self-body biased circuit is introduced that can reduce power consumption. Some derivations of the Q-enhancement and how to improve the phase noise of the circuit are also discussed. This chip is implemented by the Taiwan Semiconductor Manufacture Company 0.18 mu m 1P6M process. The measurement results exhibit a tuning range of 14.7% from 4.92 to 5.7 GHz at a supply voltage of 1.4 V. The power consumption of the core circuit and figure of merit are 2.5 mW and -188.6 dBc/Hz. The phase noise is -118 dBc/Hz@ 1 MHz at an operation frequency of 4.94 GHz.

• 出版日期2014-12
• 单位中国科学院电工研究所