In situ gas sensing with a 100 GHz CMOS spectrometer

Alexander W. Raymond, Brian J. Drouin, Adrian Tang, Erich Schlecht, Yanghyo Kim, Mau-Chung Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


A new instrument for in situ rotational spectroscopy of gases is presented. The design is based on the pulsed Fourier transform method of Balle-Flygare but operates at higher frequency than traditional microwave implementations. A semi-confocal cavity is an essential part of the new technology, which builds field strength for pumping rotational transitions. Details about the cavity quality factor and design are discussed. The cavity is combined with custom CMOS integrated circuits that synthesize, amplify, and mix the transmitter and receiver signals. Proof-of-concept laboratory measurements of molecular gases are presented. Incorporation in a comet surface sample return mission concept is discussed in detail. The sensor could be used in number of different planetary missions.

Original languageEnglish
Title of host publication2017 IEEE Aerospace Conference
PublisherIEEE Computer Society
ISBN (Electronic)9781509016136
StatePublished - 7 Jun 2017
Event2017 IEEE Aerospace Conference, AERO 2017 - Big Sky, United States
Duration: 4 Mar 201711 Mar 2017

Publication series

NameIEEE Aerospace Conference Proceedings
ISSN (Print)1095-323X


Conference2017 IEEE Aerospace Conference, AERO 2017
CountryUnited States
CityBig Sky

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