Spectrum Analyzer Block Diagram
Spectrum analyzer basics 2.
Spectrum analyzer block diagram. The block diagram of a spectrum analyzer of swept frequency type is shown in figure. Block diagram of a spectrum analyzer. Spectrum analyzer 101 spectrum analyzer background and spectrum analyzer background and reference material block diagramblock diagram key specifications 22 controls and settingscontrols and settings handshands on measurementson measurements analog and analog and digital signals hints and kinkshints and. The spectrum analyzer used for analyzing the signals are of rf range is called superheterodyne spectrum analyzer.
Modern analyzers replace much of this analog hardware with digital circuitry s ee figure 6. Inside the analyzer there is a mixer which converts the input signal from one frequency to another. Model of the noise in heterodyned block diagram 20 yg page 20 x series spectrum analyzers seminar 2010. In this video i have explained spectrum analyzer block diagram basics and working with following outlines.
The working of superheterodyne spectrum analyzer is mentioned below. It is also useful to display signals in the frequency domain. Lets describe each component individually. Spectrum analyzer block diagram the most common way of observing signals is to display them on an oscilloscope with time as the x axis i e.
The block diagram of a spectrum analyzer is shown below. Shown here is a block diagram of a traditional swept spectrum analyzer. X series spectrum analyzers seminar 2010. The output of the saw tooth wave controls the frequency of the voltage controlled oscillator also called the voltage tuned oscillator.
2 2 spectrum analyzer block diagram and theory of operation the main components of spectrum analyzer are an rf input attenuator input am plifier mixer if amplifier if filter envelope detector video filter crt display lo ramp generator see fig 2. Spectrum analyzers are widely used within the electronics industry for analyzing the frequency spectrum of radio frequency rf and audio signals. Amplitude of the signal versus time. So let us now understand the operation performed by each block individually.
As we can see the spectrum analyzer is composed of components like rf attenuator mixer if filter detector sweep generator local oscillator and display unit. Pxa block diagram 140 mhz bw option b1x 2gbyte sdram 8 3 14 ghz lo adc fpga 3 5 26 5 ghz high band 140 mhz front end 400 mhz ck f. Its block diagram is shown in below figure. The rf signal which is to be analyzed is applied to input attenuator.
The figure below shows the block diagram representation of a spectrum analyzer with digital display.