Fractal-Element Antennas
Nathan Cohen
Fractal Antenna System, Inc.
and
Boston University
Abstract
Self-similar antennas have been known since Mushiake's 1948 work
on self-complementary designs. However, it has only been in the
last few years that fractal antennas have been extended to a
more generalized design approach. We report the application of
deterministic and random fractals to practical applications,
especially in wireless telecommunications. The self-similar
patterns can be exploited to incorporate one or more useful
attributes including: substantial size shrinkage; broad or multi
bandedness; increased gain; power pattern agility. Used as
miniature antennae, fractals have much to offer in terms of size
and cost savings, as well as reliability. We describe
'antenna-less' (that is, hidden) uses of fractal antennae in
hand-held environments as well as some surprising uses for other
needs.
Nathan Cohen
Fractal Antenna System, Inc.,
2 Ledgewood Place
Belmont MA 02178
617-489-6952
and
Science and Engineering Program
Boston University
Boston MA*
* fractenna @aol.com