[1] [1] HEGAZI E, SJOLAND H, ABIDI A A. A filtering technique to lower LC oscillator phase noise ［J］. IEEE J Sol Sta Circ, 2001, 36(12): 1921-1930.

[2] [2] LEVANTINO S, SAMORI C, ZANCHI A, et al. AM-to-PM conversion in varactor-tuned oscillators ［J］. IEEE Trans Cir & Syst II: Anal & Digit Signal Proces, 2002, 49(7): 509-513.

[3] [3] RAEL J J, ABIDI A A. Physical processes of phase noise in differential LC oscillators ［C］// IEEE CICC. Orlando, FL, USA. 2000: 569-572.

[4] [4] FARD D M, CHAEMIN A, AZADBAKHT M. Self-biased and tail current switching LC-VCO in CMOS technology ［C］// 5th Conf KBEI. Tehran, Iran. 2019: 349-351.

[5] [5] HENG C, BANSAL A, CHENG S J. Techniques for improving CMOS VCO performance ［C］// IEEE Int Symp RFIT. Singapore. 2009: 182-186.

[6] [6] HU Y, SIRIBURANON T, STASZEWSKI R B. Oscillator flicker phase noise: a tutorial ［J］. IEEE Trans Cir & Syst II: Anal & Digit Signal Proces, 2021, 68(2): 538-544.

[7] [7] NAGAM S S, KINGET P R. A 0008 mm2 24 GHz type-I sub-sampling ring-oscillator-based phase-locked loop with a -239.7 dB FoM and -64 dBc reference spurs ［C］// IEEE CICC. San Diego, CA, USA. 2018: 1-4.