An inverse-class-F CMOS VCO with intrinsic-high-Q 1st- and 2nd-harmonic resonances for 1/f2-to-1/f3phase-noise suppression achieving 196.2dBc/Hz FOM

doi:10.1109/ISSCC.2018.8310340

	An inverse-class-F CMOS VCO with intrinsic-high-Q 1st- and 2nd-harmonic resonances for 1/f2-to-1/f3phase-noise suppression achieving 196.2dBc/Hz FOM
	Lim, Chee-Cheow 1,2; Yin, Jun 1; Mak, Pui-In 1; Ramiah, Harikrishnan 2; Martins, Rui P.1,3
	2018-03-08
Conference Name	65th IEEE International Solid-State Circuits Conference, ISSCC 2018
Source Publication	Digest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume	61
Pages	374-376
Conference Date	2 11, 2018 - 2 15, 2018
Conference Place	San Francisco, CA, United states
Author of Source	Institute of Electrical and Electronics Engineers Inc.
Abstract	Second-harmonic common-mode (CM) resonance has been explored for LC oscillators to improve their phase noise (PN) in the past. Its implementation evolves from an explicit design [1] that relies on an extra tail tank, to a recent implicit design [2], where the resonator itself offers a CM impedance peak at 2x the oscillation frequency (FLO): Explicit design (Fig. 23.5.1-upper): a high-Q tail tank (QTAIL) is desirable to raise its impedance ZTAILat 2FLO and to prevent the loss of LTAILfrom penalizing the PN in the 1/f2region [3]. To compare with the theoretical limit (FOMMAX), the FOM in the 1/f2PN region is plotted against LTAILat different QTAIL. Closing the gap between FOMMAXand FOM imposes an excessive QTAILof 20 or beyond, which can hardly be achieved and maintained over a wide tuning range. © 2018 IEEE.
DOI	10.1109/ISSCC.2018.8310340
Language	英语
全文获取链接	View Full-Text via DOI
引用统计
Document Type	Conference paper
专题	University of Macau
Affiliation	1.University of Macau, China; 2.University of Malaya, Kuala Lumpur, Malaysia; 3.Instituto Superior Tecnico, University of Lisboa, Lisbon, Portugal
First Author Affilication	University of Macau
推荐引用方式 GB/T 7714	Lim, Chee-Cheow,Yin, Jun,Mak, Pui-In,et al. An inverse-class-F CMOS VCO with intrinsic-high-Q 1st- and 2nd-harmonic resonances for 1/f2-to-1/f3phase-noise suppression achieving 196.2dBc/Hz FOM[C]//Institute of Electrical and Electronics Engineers Inc.,2018:374-376.