ece549Quiz2Sample

ece549Quiz2Sample - ECE549 RF Design for Wireless Sample...

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1 ECE549 RF Design for Wireless Sample Quiz 2 Monday October 27, 2008 Instructions: Time: 2 hours, On-Campus Start At 5:30 pm Do all questions This is an open book, open notes exam. No laptops and no PDAs, no cell phones. Calculators allowed. All working and assumptions used must be provided. Fill in the cover sheet. NAME: __________________________________________ SIGNATURE: _______________________________________ FOR GRADERS USE ONLY 1) 2) 3) 4) 5) 6) TOTAL /60
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2 1. [10] A network consists of a source with a Thevenin equivalent impedance of 50 Ω driving first a series reactance of 50 Ω , followed by an eighth-wavelength long transmission line with a characteristic impedance 40 Ω , and a reactive element of 25 Ω in shunt with a load having an impedance 25 100 L Z = j . This problem must be solved graphically and no credit will be given if this is not done. (a) [2] Draw the network. (b) [5] On a Smith Chart plot the locus of the reflection coefficient first for the load, then with the element in shunt, and then looking into the transmission line and finally the series element. Use letters to identify each point on the Smith chart.
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ece549Quiz2Sample - ECE549 RF Design for Wireless Sample...

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