Page 272 - Build Your Own Transistor Radios a Hobbyists Guide to High-Performance and Low-Powered Radio Circuits
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FIGURE 15-16 Ап input signal sl'ightly below the sampling frequen.cy.
The output of the sampling system then pгoduces а wavefoгm such as that seen in
Figure 15-17. This figure shows basically the same type of waveform as Figures
15-13 and 15-15 with ап iпvегsiоп iп the shape of the mоdulаtiпg епvеlоре. 50 let's
see what happens when а low-frequency signal of (f s - finJow) is inverted and
sampled (Figures 15-18 and 15-19).
