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High T/R isolation and phase-noise suppression in millimeter wave FMCW radars

Abstract : We present a phase noise analysis on a frequency-modulated continuous-wave (FMCW) radars at millimeter wavelengths to achieve a transmit power up to 1 Watt. To attain high transmit power, we describe a FMCW radar design that satisfy two characteristics. First, high transmit/receive (T/R) isolation better than 80 dB, obtained through a quasioptical duplexing method and high directivity horns. Second, a 'feedforward' circuit architecture that cancels the phase noise to a high degree. We will also present the measurements and simulations results of the T/R isolation and phase noise cancelation measurements using a W-band FMCW radar prototype for a planetary science application. © 2017 IEEE.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01671562
Contributor : Laurent Jonchère <>
Submitted on : Friday, December 22, 2017 - 1:48:52 PM
Last modification on : Monday, October 5, 2020 - 9:50:26 AM

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R.R. Monje, K.B. Cooper, R.J. Dengler, T.O.E. Bouayadi, D. Gonzalez-Ovejero. High T/R isolation and phase-noise suppression in millimeter wave FMCW radars. 42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017, Aug 2017, Paris, France. ⟨10.1109/IRMMW-THz.2017.8066921⟩. ⟨hal-01671562⟩

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