Title :
Comparison of sampler and VNA based Large Signal Measurement Systems (LSNA) under CW and pulsed operation
Author :
Casbon, M.A. ; Tasker, P.J.
Author_Institution :
Sch. of Eng., Cardiff Univ., Cardiff, UK
Abstract :
Here we present a comparison of the Large Signal Measurements provided by both a VNA based and a sampler based LSNA system. In this study, in order to achieve a robust and reliable relative phase calibration a dual frequency phase differential method was used. Significantly this work compares measurements performed under both CW and pulse mode operation. Very similar RF I-V waveforms are achieved in both cases, verifying that both architectures can provide comparable measurements not only in CW but also under pulsed operation. The test device was a GaN on silicon carbide HFET.
Keywords :
calibration; frequency measurement; network analysers; phase measurement; pulse measurement; RF I-V waveform; VNA; dual frequency phase differential method; large signal measurement system; pulse mode operation; relative phase calibration; sampler based LSNA system; silicon carbide HFET; Calibration; Harmonic analysis; Oscilloscopes; Phase measurement; Pulse measurements; Radio frequency; Semiconductor device measurement; Waveform Engineering; fully active harmonic load-pull; power amplifiers;
Conference_Titel :
Microwave Measurement Conference (ARFTG), 2015 85th
Conference_Location :
Phoenix, AZ
DOI :
10.1109/ARFTG.2015.7162890