A Compact Instrument for RF Measurements of Pulsed TWTs

The development of a new and compact instrument for the measurement of pulsed high-power amplifiers in-system is reported. The instrument incorporates dual wideband receivers, dual 400 MSamples/S 12-bit digitizers, and a CompactPCI optical bridge. This paper discusses the instrument hardware implementation, integration into a target system, and representative AM/PM noise measurements of a pulsed TWT.