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Agilent vector signal analysis basics

Posted: 21 Apr 2011     Print Version  Bookmark and Share

Keywords:vector signal analysis  Fast Fourier transform  burst  transient  modulated signals 

This application note serves as a primer on vector signal analysis (VSA). It discusses VSA measurement concepts and theory of operation, as well as vector modulation analysis and, specifically, digital-modulation analysis.

Analogue, swept-tuned spectrum analysers use superheterodyne technology to cover wide frequency ranges; from audio, through microwave, to millimeter frequencies. Fast Fourier transform (FFT) analysers use digital signal processing (DSP) to provide high-resolution spectrum and network analysis. Today's wide-bandwidth, vector-modulated (also called complex or digitally modulated), time-varying signals benefi t greatly from the capabilities of FFT analysis and other DSP techniques. VSA provides fast, high-resolution spectrum measurements, demodulation, and advanced time-domain analysis. VSA is especially useful for characterizing complex signals such as burst, transient, or modulated signals used in communications, video, broadcast, radar, and software-defined radio applications.

View the PDF document for more information.

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