Spectrum analyzer is widely used in rf field
Spectrum analyzer is widely used in rf field.The basic function of a spectrometer is to detect and measure the amplitude of a signal.The spectrometer can display the rf signal within the set frequency range in a graphical way. The stronger the signal, the larger the amplitude displayed by the spectrometer. With this characteristic, the spectrum analyzer is used to search and find rf signals in a certain frequency band, which is widely used in monitoring electromagnetic environment, radio spectrum monitoring, electromagnetic compatibility measurement of electronic products, radio transmitter transmission characteristics, signal source output signal quality, anti-wireless bugs and other fields.The spectrometer can measure various characteristic parameters of rf signal, including frequency, frequency selection power, bandwidth, adjacent power, modulation waveform, field intensity, etc. In terms of rf signal frequency measurement, although the frequency meter is a professional equipment, but encounter time division multiple access signal (GSM mobile phones, IDEN, TETRA signal), frequency hopping signals, broadband signals, ordinary frequency meter cannot count accurately, rf power meter cannot measure in time, and because spectrometer based on high-speed signal capture, you can have a chance to measure the signals.In view of these common unstable signals, many middle and high grade spectrometers have also optimized the measurement software, providing special automatic measurement tools.
Since the spectrometer has the ability to visualize rf signals, the spectra can help us understand the characteristics and types of signals, and ultimately the modulation mode of signals and the type of transmitters.In the military field, spectrum analyzer is widely used in electronic countermeasures and spectrum monitoring. Different types of radar signals, communication radio signals, transponder signals and "friend or foe" recognizer signals have their own spectrum diagrams with different characteristics. In the field of civil radio management, we can find out the illegally used frequency in time through the spectrum diagram, which is much more efficient than traditional scanning monitoring.In the location of unknown interference source, the spectrum diagram is helpful to determine the type of interference signal, and to infer the possible equipment producing the interference signal, so as to narrow the screening area.The spectrometer is also a very good field strength instrument with relatively large dynamics. Some spectrometer with automatic measurement function can easily read out the field strength value of the target signal and show the surrounding situation of the target frequency.In practice, many hand - held spectrometers have replaced field - strength instruments.
Some spectrum analyzer has built-in tracking signal source, or supports external tracking signal source. The spectrum analyzer and tracking signal source can be used together to display the frequency and amplitude characteristics of dual-port network, expanding the use of spectrum analyzer.This function is similar to the main function of the frequency sweeper and the scalar network analyzer, the precision of which is much higher than that of the ordinary old frequency sweeper.If the spectrum analyzer and the tracking source cooperate with the standing wave bridge, the matching situation of the antenna can be directly illustrated, which has some functions of the antenna analyzer.