Conclusion

This article provides an almost exhaustive overview of current and future advances in Fourier transform-based signal analyzers, both methodologically and functionally.

Today, the capabilities of signal and spectrum analyzers have been extended to meet the requirements of large analysis widths (up to several gigahertz), detection of fast and transient signals, increased sensitivity (minimum amplitude of a signal that can be detected), low noise, high resolution, low response time, and even near-real time.

However, metrological performance is no longer the only criterion for choosing a signal analyzer. Manufacturers have made particular efforts to improve the user interface of their models, whether they be high-end signal analyzers or more economical spectrum analyzers, to the point where someone who has never used a spectrum or signal analyzer...