5. كم-100 The block diagram of Superheterodyne Spectrum Analyzer is shown below. (a) Explain the operations of the figure. (b) If fs is 2 GHz, flo sweeps from 4 to 8 GHz, and the frequency of IF filter is 4 GHz, please plot waveform of CRT display. 234 input H LO 23456 mixer Н sweep generator 2 IF filter A 345 fIF detector K+ SAMSUNG 0 CRT display GH