title: A CMOS millimeter-wave transceiver embedded in a semi-confocal Fabry-Perot cavity for molecular spectroscopy.
abstract: The extension of radio frequency complementary metal oxide semiconductor (CMOS) circuitry into millimeter wavelengths promises the extension of spectroscopic techniques in compact, power efficient systems. We are now beginning to use CMOS millimeter devices for low-mass, low-power instrumentation capable of remote or in situ detection of gas composition during space missions. We have chosen to develop a Flygare-Balle type spectrometer, with a semi-confocal Fabry-Perot cavity to amplify the pump power of a mm-wavelength CMOS transmitter that is directly coupled to the planar mirror of the cavity. We have built a pulsed transceiver system at 92-105 GHz inside a 3 cm base length cavity and demonstrated quality factor up to 4680, allowing for modes with 20 MHz bandwidth, with a sufficient cavity amplification factor for mW class transmitters. This work describes the initial gas measurements and outlines the challenges and next steps.
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA.
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Drouin
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA.
authors.forename: Adrian
authors.initials: A
authors.lastname: Tang
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA.
authors.forename: Erich
authors.initials: E
authors.lastname: Schlecht
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA.
authors.forename: Emily
authors.initials: E
authors.lastname: Brageot
authors.affiliation: University of California, Davis, Davis, California 95616, USA.
authors.forename: Q Jane
authors.initials: QJ
authors.lastname: Gu
authors.affiliation: University of California, Davis, Davis, California 95616, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Ye
authors.affiliation: University of California, Davis, Davis, California 95616, USA.
authors.forename: R
authors.initials: R
authors.lastname: Shu
authors.affiliation: University of California, Los Angeles, Los Angeles, California 90095, USA.
authors.forename: Mau-Chung
authors.initials: MC
authors.lastname: Frank Chang
authors.affiliation: University of California, Los Angeles, Los Angeles, California 90095, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Kim