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homework4

# homework4 - EE4609 Spring 2009 Homework#4 1 A driver is...

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EE4609 Spring 2009 Homework #4 1) A driver is connected to two receivers via transmission lines. The circuit is shown below. V S (t) R S = Z o R L2 = Z o R L3 = Z o , t d1 2Z o , t d1 /4 2Z o , t d1 /4 Line 1 Line 2 Line 3 The driver voltage is a step voltage given by 0 t < 0 V s (t) = V o t 0 The driver internal impedance is R S = Z o . The receiver impedances are R L2 = Z o and R L3 = . Each driver is connected to a transmission line of characteristic impedance Z o with a propagation delay of t d1 /4 where t d1 is the prop delay for the main line. Calculate and plot the voltage. V L2 (t), across R L2 versus time for 0 t 3.25t d1 . + V L2 -

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2) A driver sends out two pulses to a receiver on the circuit shown below. + V L (t) - V s (t) R S = Z o /4 R L = 9Z o Z o , t d The driver voltage, V S (t), is t d 2t d 3t d t V S (t) V o The driver impedance is R S = Z o /4. The line has a characteristic impedance of Z o and a prop delay, t d . The receiver impedance is R L = 9Z o .
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