High Speed VSWR Testing with a Novel Six-Port Technique

This paper describes a method of using a six-port network for rapid testing of low reflection components in a production environment. The six-port network used is the conventional correlator circuit with two directional couplers and with back diode detectors as power sensors. The detector outputs are measured, corrected, and displayed by a waveform processing oscilloscope. The technique is extremely fast, accurate, and easy to use for low VSWR measurements.