July 2001
Intermediate to advanced
576 pages
27h 16m
English
Content preview from Creative Evolutionary Systems
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500
20 Innovative Antenna Design Using Genetic Algorithms
20.7
FIGURE
Gain at 0 ~ = 16.5 dBi
\
/ / \ \
., -40
0
!
Normalized circular polarization gain pattern for rotated Yagi, in the plane of
the antenna (q~ = 0~ Each circle is 10 dB lower than the one that encircles it.
Circular polarization losses have been taken into account. From Linden (1997a).
exacting standards. But the GA allows the engineer to use a Yagi, which is easier
to make, for the same purpose. Though the Yagi must also be made to exact
specifications, it is much easier to make short wires the correct size ...
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