WR15 Six-port Interferometric Set-up for Millimeter-wave Characterization in Harsh Environments

International audience; Continuous wave (CW) millimeter-wave radars have gained the interest from industry for accurate distance measurement. In particular, six-port radar (SPR) architecture presents advantages such as high resolution combined with lowpower consumption and low-cost implementation. A WR15 waveguide six-port interferometer is designed and realized for accurate phase measurement in the millimeter-wave regime for harsh environment conditions. This latter is combined with dedicated calibration algorithms to provide measurements performance in terms of sensitivity and accuracy. Experimental results are exemplary shown with mean phase error 2.2 degrees at the test frequency 60 GHz.