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所属单位：University of Electronic Science and Technology of China (UESTC)

教研室：Integrated Physics Group (IPG)

发表刊物：2026 IEEE/JSAP Symposium on VLSI Technology and Circuits (VLSI)

刊物所在地：Honolulu, Hawaii, US

关键字：chip-scale molecular clock, CMOS spectrometer, 4FSK modulation, DTC, phase offset calibration

摘要：This paper presents a CMOS spectroscopic transmitter probing the 231.061GHz rotational spectra of OCS gas molecules for chip-scale molecular clocks (CSMC). It adopts 4FSK modulation through a DTC FSK modulator to mitigate the baseline tilting of gas cell with negligible SNR penalty. A 104.4~122.4GHz integer-N sub-sampling PLL (SSPLL, N=36) reduces the phase noise (PN) for high SNR. Phase offset calibration ensures robust locking of SSPLL under PVT variation. A 5.8~6.8GHz fractional-N sampling PLL (SPLL) drives the SSPLL. Fabricated on 65-nm bulk CMOS, it achieves a measured PN of −79.2dBc/Hz.

备注：https://www.vlsisymposium.org/

全部作者：Xiao Luo,Xinyang Chen,Chang Liu

第一作者：Geyu Qiang

论文类型：国际会议

通讯作者：Cheng Wang

学科门类：工学

一级学科：电子科学与技术

是否译文：否

发表时间：2026-06-25