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

R.R. Monje (1) , K.B. Cooper (1) , R.J. Dengler (1) , T.O.E. Bouayadi , D. Gonzalez-Ovejero (2)

1 JPL - Jet Propulsion Laboratory
2 IETR - Institut d'Électronique et des Technologies du numéRique

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.

Mots clés: Continuous wave radar; Frequency modulation; Millimeter waves; Radar; Radar measurement; Radar systems; Terahertz waves; Circuit architectures; Frequency modulated continuous wave radars; High-directivity; Millimeter wavelength; Phase noise analysis; Phase noise suppression; Planetary science; Quasioptical duplexing; Phase noise

Domaines: Réseaux et télécommunications [cs.NI]; Electronique

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⟩