期刊
IEEE JOURNAL OF SOLID-STATE CIRCUITS
卷 53, 期 7, 页码 1977-1987出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2018.2818681
关键词
30 GHz; explicit common-mode (CM) return path; fifth generation (5G) communication; flicker noise reduction; implicit resonance; impulse sensitivity function (ISF); low phase noise (PN); millimeter-wave (mmW); oscillator; periodic transfer function (PXF)
资金
- Science Foundation Ireland [14/RP/I2921]
This paper presents a millimeter-wave (mmW) frequency generation stage aimed at minimizing phase noise (PN) via waveform shaping and harmonic extraction while suppressing flicker noise upconversion via proper harmonic terminations. A 2nd-harmonic resonance is assisted by a proposed embedded decoupling capacitor inside a transformer for explicit common-mode current return path. Class-F operation with 3rd-harmonic boosting and extraction techniques allow maintaining high quality factor of a 10-GHz tank at the 30-GHz frequency generation. We further propose a comprehensive quantitative analysis method of flicker noise upconversion mechanism exploiting latest insights into the flicker noise mechanisms in nanoscale short-channel transistors, and it is numerically verified against foundry models. The proposed 27.3- to 31.2-GHz oscillator is implemented in TSMC 28-nm CMOS. It achieves PN of -106 dBc/Hz at 1-MHz offset and figure-of-merit (FoM) of -184 dBc/Hz at 27.3 GHz. Its flicker phase-noise (1/f(3)) corner of 120 kHz is an order-of-magnitude better than currently achievable at mmW.
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