A Six-Port Reflectometer and its Complete Characterization by Convenient Calibration Procedures

A simple six-port reflectometer and two methods of calibration using either 51/2 or 61/2 standard terminations are described. High precision is obtained using diode detectors, which are calibrated in situ against a single thermistor power meter. The addition of a few extra components provides a moderately accurate visual display in real time over the 1-8-GHz band.