This presentation discusses a world-first source-load pull system centred around the R&S®ZVA vector network analyser and 110 GHz passive tuners. The calibration procedure is described highlighting possible critical steps and the solutions adopted to improve the confidence in the measurement results. A load-pull based vector calibration to enhance the accuracy at high VSWR is presented, showing significant impact on transistor measurements at E-band.

Authors: Alexander Baddeley, Roberto Quaglia, Paul Tasker