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# Quiz 8 - b series impedance matching at the source 5(2...

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ECE3025, Summer 2011, Quiz 8 July 22, 2010 1. (2 points) What is the primary reason you wish to impedance match the load resistance to the trans- mission line characteristic impedance? 2. (2 points) Explain why a parallel fanout of a transmission line with characteristic impedance Z 0 to N transmission lines of characteristic impedance Z 0 will give rise to a reflection. 3. (2 points) Select the correct response: A transmission line does not A) dissipate power, B) transmit power, or C) store energy. 4. (2 points) Explain one advantage and disadvantage of a) parallel impedance matching at the load, and

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Unformatted text preview: b) series impedance matching at the source. 5. (2 points) Explain why we can use voltages and currents instead of electric ﬁelds and magnetic ﬁelds when we analyze transmission lines. 1 6. (15 points) In the system shown below, the switch is kept in position A for a long time. At t = 0, the switch is moved to position B . Develop a reﬂection diagram for the charging process resulting from the switch changing position, up to t = 4 T . In addition, plot the load voltage V L ( t ) and the input current I in ( t ) for 0 < t < 4 T . 2...
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