Accurate power measurements using spectrum …

For the very latest specifications IFR 239X series spectrum analyzers from Aeroflexrun automatic power measurement functions dedicatedto modern digital radio systems power measurements usingspectrum analyzersby Jean No l Payen & Jean Jacques PerretThese systems use modulation techniques that makegenerated signals difficult to measure using standardmethods, and quite impossible with RF power meterswhen interferers or other channels are present togetherwith the signal. In this case, a spectrum analyzer is thebest tool to use if fitted with dedicated power measure-ment cover these requirements, Aeroflex has developed acomprehensive range of spectrum analyzers, the 239 Xseries, with models from 9 kHz to 3, 13 and the instruments of this family have a set of semi-auto-matic measurement functions that include the following:- X dB Down, measuring the X dB bandwidth of a system- Adjacent Channel power , measuring the channel powerand the difference between cha

The aim of this application note is to provide information allowing for better use of the power measurement functions, to explain the measurement method employed and to highlight the causes for

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