Scalar calibration of quasi-optical reflection measurements

For accurate calibrated measurements, calibration procedures tend to rely on the acquisition of vector data by means of heterodyning or multiport power measurements. In this paper, we propose a novel scalar one-port calibration method for quasi-optical frequency response measurements. Only uncalibrated reference and reflected power detectors are needed for accurate results within specified error bounds. Calibration is based on a modified match-short-short procedure, and scalar reflection of the sample is calculated from two measurement points per frequency. The effectiveness of the method is illustrated with two experimental cases measured over the full W-band.