Cny e upper sldeband (uSB) and lower sideband (LSB) spectra. (5 polnts) Al 2. Figure-1 below show...
[15 points] You are asked to design a DSB-SC AM modulator to generate a modulated signal km(t)cos(wt+0), where m(t) is a signal band-limited to B Hz. The following figure shows a DSB- SC AM modulator available in the stockroom. The carrier generator available generates not cos(wct), but cos (wct). Explain whether you would be able to generate the desired signal using only this equipment. You may use any kind of filter you like. 3. What kind of filter is required...
7. Single sideband (SSB) signals can be generated in two ways. In this problem you will verify that both methods give the same answer A. Selective filtering: Here, the DSB-SC signal g(t) is first generated which is filtered to get the USB signal g(t) m(t) QUSB(t) 2 cos(wet) Figure 3: Generation of SSB signals (a) Consider the message signal m(t) rad/sec. Draw the spectra of the signals m(t), g(t) and øUSB(t) in figure 3. cos(t) and a carrier frequency of...