spektrumanalizátor

A spektrumanalizátor, or spectrum analyzer in English, is an electronic measuring instrument used to examine the spectrum of frequencies of a signal. It displays the magnitude of the input signal versus its frequency. This allows for the analysis of the signal's spectral content, identifying the presence and strength of different frequency components.

The primary function of a spectrum analyzer is to visualize how a signal's power or amplitude is distributed across a range of frequencies. This information is crucial for a wide variety of applications. In telecommunications, it's used to check for signal integrity, identify interference, and optimize wireless systems. Engineers in radio frequency (RF) engineering and electronics design rely on spectrum analyzers to troubleshoot circuits, test transmitters and receivers, and ensure compliance with regulatory standards.

Different types of spectrum analyzers exist, including swept-tuned and real-time analyzers. Swept-tuned analyzers sequentially scan through the frequency range, while real-time analyzers capture and process the entire spectrum simultaneously, offering a more comprehensive view, especially for transient or rapidly changing signals. The output is typically presented as a graph where the horizontal axis represents frequency and the vertical axis represents amplitude or power. Understanding the spectral characteristics of a signal is fundamental to diagnosing problems and verifying performance in many technological fields.