HW2_Sol - ECE 613 Fall 2010 Homework Set 2 Solutions...

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Unformatted text preview: ECE 613 Fall 2010 Homework Set 2 Solutions Problem 1 The directive gain is ) 4 ( 2 r P S D rad , and for a linear antenna E r S 2 2 1 sin 2 cos cos 2 cos kl kl r e I j E jkr 2 2 ; 10 1 10 3 ; 3 8 8 kl k l x x f c m l therefore sin 1 cos cos 4 2 2 2 2 2 2 r I E o and sin 1 cos cos 8 2 2 2 2 r I r S o 2 0 0 A d S P rad with d d r r A d sin 2 sin 1 cos cos 8 sin 2 2 2 2 I d d P rad 2 sin 1 cos cos 4 d I the directivity is P r S D rad 2 2 4 ....
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HW2_Sol - ECE 613 Fall 2010 Homework Set 2 Solutions...

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