RMo3A-1 A Sub- THz CMOS Molecular Clock with 20 ppt Stability at 10,000 s Based on Dual-Loop Spectroscopic Detection and Digital Frequency Error Integration

2026-06-27 Hits:

Affiliation of Author(s):Massachusetts Institute of Technology (MIT)

Journal:2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

Place of Publication:Denver, CO, USA

Funded by:frequency stability, dual loop, molecular clock, CMOS, terahertz, spectroscopy, carbonyl sulfide

Key Words:frequency stability, dual loop, molecular clock, CMOS, terahertz, spectroscopy, carbonyl sulfide

Abstract:This paper presents a dual-loop chip-scale molecular clock (CSMC), which enhances the Allan Deviation performance by combining high signal-to-noise ratio of using fundamental mode and long-term stability of using higher order modes in derivative molecular absorption spectroscopy. In addition, digital frequency-error integration is adopted in the frequency-locked loop to provide an infinite open-loop DC gain, which fully suppresses any frequency drift caused by the temperature-sensitive crystal oscillator. This new generation CSMC is implemented in 65-nm CMOS, and achieves 20 ppt (part-per-tril

Note:https://ieeexplore.ieee.org/document/9863147

All the Authors:Cheng Wang,Lin Yi,Hae-Seung Lee

First Author:Mina Kim

Indexed by:Conference

Correspondence Author:Ruonan Han

Document Code:10.1109/RFIC54546.2022.9863147

Discipline:Engineering

First-Level Discipline:Electronic science and technology

Page Number:115-118

Translation or Not:no

Date of Publication:2022-06-19

Date of Publication:2022-06-19