Dynamic time-frequency waveforms for VSA characterization of PA long-term memory effects

This paper presents a new two-tone measurement signal with dynamic frequency characteristics for PA memory evaluation using a Vector Signal Analyser, VSA, as the instrumentation measurement tool. This new dynamic frequency waveform enables nonlinear PA characterization over frequency with a single measurement similar to what is done for sequential two-tone measurements when the tone spacing is varied over multiple different frequencies. Measurements are conducted in order to characterize a PA with memory effects manifestation. Moreover all the previous measurements capabilities that were made with a Transition Analyser are expanded here with use of a VSA. This will impose synchronization problems that will also be described on the paper.