Given the following signal: s(t) = 10 + 10 cos(2π.300t) cos(2π.700t)
Given the following signal:
s(t) = 10 + 10 cos(2π.300t) cos(2π.700t)
Answer the following questions:
Use the following trigonometric identity and simplify s(t).
cos A.cosB = 1/2cos(A-B) + 1/2cos(A+B)
(a) Find the spectrum of the s(t) signal.
(b) Find the Bandwidth (B) of the s(t) signal.
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Given the following signal: s(t) = 10 + 10 cos(2π.300t) cos(2π.700t)
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When the message signal m (t) =cos (2π fmt) and the
carrier signal is c(t)=cos (2π fct) ,
fm<< fc,
The modulated DSB-SC signal
SDSB-SC=m(t)cos(2πfct) is generated, and only
the upper sideband
To generate and transmit the SSB signal. As shown in the figure
below, the receiver is a local oscillator
cosine signal to the received signal and passes it through a
low-pass filter. Answer the following questions.
(a) Draw the waveform of DSB-SC modulated signal
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please answer all parts
and write clearly
thank you
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