What is a Spectrum Analyzer and Measurements You Can Make - What the RF (S01E01)
Learn what a spectrum analyzer is and the various measurements you can make with one.
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What is a spectrum analyzer and what measurements can it make? A spectrum analyzer displays received signals with respect to amplitude vs. frequency. This is called frequency domain analysis.
The terms spectrum analyzer and signal analyzer are used almost interchangeably, however, there are some slight differences. Spectrum analyzers, by definition, measure the phase of a signal. Signal analyzers, on the other hand, measure the amplitude and phase of the input signal at a single frequency.
If you transmit an RF signal from your device, a signal analyzer can down convert the signal to a digital signal and the signal analyzer can display your device’s signal in terms of constellations, spectrum, spectral masks, etc.
Basically, a signal analyzer analyzes both amplitude and frequency and phase of your signal of interest, which you can’t do on a spectrum analyzer.
The main use of a spectrum analyzer is to measure the power of a signal’s various frequency components like radio frequency and audio signals.
A spectrum analyzer allows you to analyze a device’s signal and circuit performance in a way that isn’t possible using other means, say, looking at it in the time-domain.
Spectrum and signal analyzers can make a large variety of measurements ranging from harmonic distortion tests for transmitters, WLAN and spectral masks for showing limits of unwanted emissions to two-tone tests on an RF power amplifier.
Because of how powerful a spectrum analyzer is, it’s practically owned across all engineering labs for design development and testing of engineers’ devices. If you need to see the frequency make-up of your signals a spectrum analyzer is a great tool to have.
Tune in for future What The RF (WTRF) episodes covering more spectrum analyzer capabilities and fundamental measurements to see how you can test more efficiently!
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The signal analyzer we used: http://bit.ly/EXASignalAnalyzer
(The Keysight X-Series EXA Signal Analyzer)
The X-Series signal analyzers allow you to visualize across the spectrum to see known and unknown signals. Choose from frequencies of 3 Hz – 110 GHz and 1 MHz – 1 GHz analysis bandwidth.
What the RF is hosted by Nick Ben. The video series covers when and how to use different applications and capabilities of the X-Series spectrum analyzers to make various RF measurements. You’ll gain familiarity with features that will help you save time in your measurement, further your analysis, and deepen your insight.
#rf #spectrumanalyzer #electricalengineer #signalanalyzer #keysight
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