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Unformatted text preview: r optimal reception, we can state that the second dipole should be oriented along y -direction in order not to have ˆ ! !# cross-polarization.#In this case, # fields" $ &# the radiated by one dipole will be tangential to the surface "& (' of the other one. ! $ # the second9dipole can 9 anywhere on the xz -plane at a distance of 1 Also, C 7'8" ! 6 7'8" ! be km. In this case, each of the antennas will be in the direction of the maximum radiation of the other one. b) Using the Frii‘s formula given in Page 4 of Lecture 36, we can write 2 Pr = Pt Gt G r (4⇡ r)2 (3 ⇥ 108 /3 ⇥ 108 )2 = 1⇥ (1.64)2 ⇡ 6.81 ⇥ 10 (4⇡ 1000)2 $ 4 D$ 8 W. $"! #,':&(&*;+<&'()&'=,77+>?&',*+&<($(+,<7'$<:'?,!$(+,<7'-,*',=(+;$?'*&!&=(+,<'!,<7+:&*'() -+@6*&'>&?,A"' / :+=,?&C7D'+<(,'()&'=$@&8' E ( =,?$*+F&: " 0 %; *&!&+G+<@':+=,?&'$(' E ()&',*+@+<8'( =,?$*+F&: ' ' Figure 1: Possib...
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This note was uploaded on 02/03/2014 for the course ECE 350 taught by Professor Kudeki during the Spring '11 term at University of Illinois, Urbana Champaign.

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