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Unformatted text preview: A IB B A
2I B IA
B y = -d
E1, 2 y=d
E 0 exp yd 22
2 y y-z z y (y #" 1MHz L 1km 10km L ! #"
0 z near field ! far field 2 1 a n( z ) z a n0 2 x
zf zf z0 0 zf
x 0, z 0
L n0 , a, L
d
2 2 arccos h z=0 0,0
n( x) 0 x 1 ax 1 x0 ! x0 Ix d, L d l , a, b far field
b a!0 l
a b b a Ix X a l
X=0 b
screen d d dr n ds ds "n ds $ ...
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- Spring '07
- asdf
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