Spectrum Analyzer Introduction

The spectrum analyzer is a representative product of the frequency domain measuring instrument. It displays the fundamental and harmonic amplitudes of the input signal as a function of frequency. There are many kinds of measurement functions, including frequency, power, noise, and electric field strength, which are the most commonly used parameters. Frequency domain instrumentation. The main applications of spectrum analyzers are broadcasting, television, communications and networks. As these applications are increasingly developed to higher frequencies, in order to solve the problem of insufficient frequency resources, its measurement range has expanded from the RF band to the microwave band. For statistical convenience, the spectrum analysis was divided into three sections: 3GHz, 18GHz and 26GHz. The total sales accounted for 18% of the global general-purpose instrument market, second only to the oscilloscope market.

Currently, mobile communications mainly use sub-3GHz frequency bands and extend to more than 3GHz; satellite television mainly uses 3GHz frequencies and also expands to 5GHz frequency bands; network communications mainly use sub-1GHz frequency bands and begins to expand to 10GHz; defense military communications use microwave frequency bands, and optical fibers Communication also uses the microwave band.