The output of a broadband RF amplifier contains three signals as illustrated by the spectrum labelled ,( f )

The output of a broadband RF amplifier contains three signals as illustrated by the spectrum labelled ,( f ). The bandwidth of each of the signals is 10 kHz. The Center Frequency of the Band pass Filter is 445 KHz. D , (f ) 12 (f ) A BPF D3 ( f ) cos (2nt fio t) D1 (f ) 2 1.5 0 .5 -0.5 f butnot bobivory aspage will an eager saord to its620 kHz 700 KHz 820 kHz A. Determine the frequency of the Local Oscillator, flo, required to isolate the signal centered at 700 kHz. B. Sketch the Spectrum labelled 2( f ). C. Determine the Bandwidth of the Bandpass Filter required to isolate the signal centered at 700 kHz. D. Sketch the Spectrum labelled 3( f ). E. Starting with the signal Spectrum labelled 3( f ), sketch the block diagram of the system required to demodulate the signal. Label the band width of each filter.