A Noise Circulating Cross-Coupled VCO with a 195.6dBc/Hz FoM and 50kHz 1/f3 Noise Corner

被引：3
作者：
Wang, Fei [1 ]
Wang, Hua [1 ]
机构：
[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
来源：
2019 IEEE CUSTOM INTEGRATED CIRCUITS CONFERENCE (CICC) | 2019年
关键词：
cross-coupled oscillator; flicker noise; impulse sensitivity function (ISF); noise modulating function (NMF); phase noise; supply pushing; transformer; PHASE NOISE; CMOS;
D O I：
10.1109/CICC.2019.8780258
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a transformer-based crosscoupled voltage-contrsdkd-oscinator (VCO) topology with a noise circIllating act it core. The proposed noise circulating technique suppresses both the 1/f(2) and 1/f(3) phase noise. Due to its broadband nature, the resulting VCO phase noise in both 1/f(2) and 1/f(3) regions is gready improved over a wide tuning range. A pro tots pe VCO M 2.35Gliz is implemented in a standard 130nm bulk CM OS process with 0.36mm(2) et we area. It consumes 2.15mA from a 1.2V supply. The measured figure-of-merit (FoM) is 193.1/195.0/195.6 dBc/Hz at 100k/1M/10MHz offsets with a 1/f(3) phase noise corner of only 50kHz. Tim VCO design consistently achieves >192.8dBc FoM at 100k/1M/10MHz offsets and <60kHz 1/f(3) phase noise corner over its entire 18.6% tuning range (2.05-2.47GHz). It has very low supply pushing of -25MHz/V and -13MHz/V at the highest and lowest frequencies, respeetiveks.
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页数：4
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