![]() Sampling rate is often varied in relation to the frequency span under consideration. The signal is then digitized using an analog-to-digital converter. The use of a voltage-controlled oscillator allows consideration of different carrier frequencies.Īfter the conversion to an intermediate frequency, the signal is filtered in order to band-limit the signal and prevent aliasing. ![]() The vector signal analyzer spectrum analysis process typically has a down-convert & digitizing stage and a DSP & display stage.Ī vector signal analyzer operates by first down-converting the signal spectra by using superheterodyne techniques.Ī portion of the input signal spectrum is down-converted (using a voltage-controlled oscillator and a mixer) to the center frequency of a band-pass filter. A vector signal analyzer block diagram featuring a down-convert stage, a digitizing stage, and a DSP and display stage ![]()
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