This presentation by Rulon VanDyke of Keysight Technologies, Inc., demonstrates using simulation and measured data how real world specs in these parts; e.g. frequency dependence, affect digital modulation metrics such as EVM, ACPR and BER. Through modulated RF budget analysis, we can quickly identify and correct the parts in the RF system chain that impact these metrics to eliminate design iterations.
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For a free evaluation copy of SystemVue: http://www.keysight.com/find/eesof-systemvue-latest-downloads