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Unformatted text preview: Department of Electrical and Computer Engineering ECSE 352 Electromagnetic Waves and Optics eview Problems Review Problems Example Example The standing wave ratio on a lossless 50 transmission line terminated in an unknown load impedance is found to be 3.0. The distance between successive voltage minima is 20 m, and the first minimum is located at 5 cm from the load. Determine (a) the reflection cm, and the first minimum is located at 5 cm from the load. Determine (a) the reflection coefficient and (b) the load impedance. ECSE 352 Example Example A signal generator is to feed equal power through a lossless air transmission line with a characteristic impedance 50 to two separate resistive loads, 64 and 25 . Quarter- ave transformers are used to match the loads to the 50 ne. (a) Determine the required wave transformers are used to match the loads to the 50 line. (a) Determine the required characteristic impedances of the quarter-wave lines. (b) Find the standing-wave ratios on characteristic impedances of the quarter-wave lines....
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- Spring '10