In[1]:=

<<Graphics`Graphics`

Laplace transform of an SD pulse with tail

In[2]:=

c = ^(-6) (UnitStep[t] - UnitStep[t - 600 * 10^(-9)]) ^(10^7t) + (UnitStep[t - 600 * 10^(-9)] - UnitStep[t - 700 * 10^(-9)]) (-10^7t + 7)

Out[2]=

(7 - 10000000 t) (-UnitStep[-7/10000000 + t] + UnitStep[-3/5000000 + t]) + ^(-6 + 10000000 t) (-UnitStep[-3/5000000 + t] + UnitStep[t])

In[3]:=

LaplaceTransform[c, t, s]

Out[3]=

Replace s with jw

In[4]:=

Out[4]=

In[5]:=

Plot[Abs[d], {w, -1 * 10^8, 1 * 10^8}, ImageSize→600]

[Graphics:HTMLFiles/index_9.gif]

Out[5]=

-Graphics -

In[6]:=

LogLinearPlot[20 * Log[Abs[d]]/Log[10], {w, 1 * 10^(-5), 1 * 10^8}, ImageSize→600]

[Graphics:HTMLFiles/index_12.gif]

Out[6]=

-Graphics -

In[7]:=

LogLinearPlot[20 * Log[Abs[d]]/Log[10], {w, 1 * 10^(-5), 1 * 10^9}, ImageSize→600]

[Graphics:HTMLFiles/index_15.gif]

Out[7]=

-Graphics -

In[8]:=

Plot[180/π * ArcTan[Im[d]/Re[d]], {w, 1, 1 * 10^7}, ImageSize→600]

[Graphics:HTMLFiles/index_18.gif]

Out[8]=

-Graphics -


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