final_2008

final_2008 - ECE 107 Final exam Thursday, March 20, 2008...

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ECE 107 Final exam Thursday, March 20, 2008 Name: _______________________________________________ Please show all your work for more rational grading. Give ALL solutions as formulas, i.e. symbolically. Then, substitute numbers to give your final answers if needed. Indicate units on all numerical answers. Box your final answers. GRADING: 1) 34 points ________________ 2) 33 points ________________ 3) 33 points ________________ Total (100 points) _________________
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Problem 1 You are given a parallel plate transmission line made of perfect electrically conducting plates of width with the distance between the plates of 1 wc m = 0.25 dc m = . The space between the plates is filled with vacuum. The transmission line is short-circuited at 0 z = . It is excited by a source of frequency . 1.8GHz f = a) Find parameters characterizing the transmission line, i.e. 0 ', ', ', ', , , , p RLGC Z u β λ . b) The voltage at is 1 3 zc =− m 4 1 () 5 j Vz . e V π = ± Give expressions describing the voltage and current in the transmission line in the form of phasors and in the time domain representation.
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This note was uploaded on 06/30/2010 for the course ECE ECE 107 taught by Professor Ericfullerton during the Spring '07 term at UCSD.

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final_2008 - ECE 107 Final exam Thursday, March 20, 2008...

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