# communication theory EET

take the diode transfer function and show where the non-linear multiplication arises - as we did a few weeks back.

You will need to recall power series for exponential function exp(x) from calculus and some trigonometry ideas as well.

The diode transfer relation to start is: I in diode = Is*[exp(k*V across diode) - 1]

Show an appropriate number of terms of the series, mix in some algebra, simplify and ID the multiplication.

Now, what happens when the voltage you drop on a diode is the sum of a low frequency and high frequency sine wave? Stir in some trig to show what frequencies should be in the spectrum.

Then, because you were awake in lab, create a graph of the spectrum and its features you expect to see.

Write this up and have it ready to turn in before the next lab session.

Compétences : Génie Électrique, Electronique, Ingénierie

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