Download Fundamentals of Applied Electromagnetics (5th Edition) by Fawwaz T. Ulaby PDF

By Fawwaz T. Ulaby

commonly acclaimed either within the U.S. and in another country, this reader-friendly but authoritative quantity bridges the distance among circuits and new electromagnetics fabric. Ulaby starts off assurance with transmission strains, prime readers from universal strategies into extra complex themes and purposes. Includes six new sections on Waveguides and hollow space Resonators, replacing the cloth on geometric optics in bankruptcy eight. provides new know-how Briefs on correct issues, connecting strategies within the e-book to daily functions present in genuine existence, similar to liquid crystal monitors, the laser, GPS, and x-ray tomography. contains an interactive CD-ROM that enables readers to realize actual instinct approximately electromagnetics. A precious reference for engineers.

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22), ✂ g✄ jwL ✂ G ✠ ✠ jwC ✂ ✂ 139 ☞ 10 ✍ 9 H/m✂ ✠ 9 ✌ 1 ☞ 10 ✍ 3 S/m ✂ j 2p ☞ 109 s ✍ 1 ✂ 362 ☞ 10 ✍ 12 F/m ✂ ☞ ✠ ✄ 109 ☞ 10 ✍ 3 j44 ✌ 5 ✂ m ✍ 1 ✌ ✠ Thus, from Eqs. 25b), a ✄ 0 ✌ 109 Np/m and b ✄ 44 ✌ 5 rad/m. ✄ R 0 ✌ 788 W/m ✂ From Eq. 29), Z0 ✄ R G ✠ ✠ jwL jwC j 2p ☞ 109 s ✍ ✄ 1 ✄ 19 ✌ 6 From Eq. 6 In addition to not dissipating power, a lossless line has two important features: (1) it is dispertionless (µp is independent of frequency) and (2) its characteristic impedance Z0 is purely real. Sometimes, it is not possible to design a transmission line such that R ✁ wL and G✁ wC , but it is possible to choose the dimensions of the line and its material properties so as to satisfy the condition RC ✄ LG (distortionless line) ✌ Such a line is called a distortionless line because despite the fact that it is not lossless, it does nonetheless possess the previously mentioned features of the loss line.

Zin jXinsc . Solving Eq. 68) for the line length, l ✄ 1 tan ✍ b ✞ 1 Xinsc ✡ Z0 1 tan ✍ 8 ✌ 38 rad/m ✄ ✞ 1 40 W ✡ 50 W ✄ 0 ✌ 675 np ✂ rad ✠ 8 ✌ 38 rad/m ✁ for which the smallest positive solution is 8 ✌ 05 cm (with n ✄ 0). 25 A lossless transmission line is terminated in a short circuit. How long (in wavelengths) should the line be in order for it to appear as an open circuit at its input terminals? sc Solution: From Eq. 68), Zin Hence, l ✄ ✄ jZ0 tan bl. If bl ✄ l p ✑ np✒ 2p 2 ✠ ✄ p☛ 2 l nl 4✠ 2 ✠ sc np ✂ , then Zin ✄ j¥ W ✂ .

Using Eq. 31 A generator with Vg ✄ 300 V and Zg ✄ 50 W is connected to a load ZL ✄ 75 W through a 50-W lossless line of length l ✄ 0 ✌ 15l. (a) Compute Zin , the input impedance of the line at the generator end. (b) Compute Ii and Vi . (c) Compute the time-average power delivered to the line, Pin ✄ 12 Vi Ii ✁ . (d) Compute VL , IL , and the time-average power delivered to the load, PL ✄ 12 VL IL ✁ . How does Pin compare to PL ? Explain. (e) Compute the time average power delivered by the generator, Pg , and the time average power dissipated in Zg .

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