Press release

Metamaterial Antenna Technology Surpasses Yagis, Receives Patent

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Fractal Antenna Systems, Inc. (FRACTAL) today announced upcoming
issuance of a fundamental patent on unidirectional antennas, that
replace existing applications with smaller, more versatile and visually
pleasing options and form factors. The breakthrough is made possible by
the firm’s proprietary fractal and metamaterial technology.

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Fractal Antenna Systems' breakthrough metablade(TM) antenna technology gives directional needs, new  ...

Fractal Antenna Systems’ breakthrough metablade(TM) antenna technology gives directional needs, new options, and applications. A tower mount comparison to a Yagi antenna. Inset shows a WiFi metablade(TM) with inside cut away. Patent pending. (Photo: Business Wire)

For more than two decades, FRACTAL has explored, developed, and invented
fractal-based electromagnetic technology, using size-shrunk fractal
resonators/fractal antennas with a broad and or multiband advantage.
Fractals have self-similar structure on a variety of size scales.
Close-packing of the fractals makes this a metamaterial, producing a
unique composite: a ‘fractal metamaterial,’ that enables wave bending,
gain, and control in ways previously not attained. For example, fractal
metamaterials made possible the firm’s invention of the invisibility
cloak, for which it now holds the patent portfolio for virtually all
aspects and uses.

The new fractal metamaterial technology offers a superior alternative to
Yagi-Uda antennas. Resembling a fishbone, ‘Yagis’ are among the most
used of antenna designs because they produce high gain directional
coverage with only one electrical connection point. But Yagis suffer
from long, stretched form factors that make them susceptible to wind
load, environment, and a lack of aesthetic appeal.

FRACTAL inventors found that fractal metamaterials, with their ability
for wideband evanescence and surface waves, could produce parasitic
antennas that were highly directional and far smaller in form factor
than Yagis. From VHF to frequencies encompassing Wi-Fi and even 5G, the
new “metablade”™ antennas can be drop replacements for their Yagi
counterparts, while their smaller size lets them be used in situations
where Yagis cannot.

A key difference for the metablade™ antennas is they are not locked into
a fishbone arrangement. Notes co-inventor Nathan Cohen: “the gain
doesn’t need the elongated sideways arrangement of the Yagi. Metablade™
antennas can be a smaller, vertically-oriented structure with the same
or better performance than the Yagi. A metablade™ antenna looks more
like the mounting bracket for an antenna rather than the antenna itself.
It’s a huge difference. This becomes a superior antenna choice for tower
and building owners. Fishbones are best left for the cat.”

FRACTAL recently announced its first metablade™ antenna product—a
wideband antenna for public safety needs, at the In-Building Wireless
Congress. Additional rollout of SCADA, Wi-Fi, 5G, and other applications
commence in the fall. The metablade™ antennas are exclusively offered
and sold through FRACTAL.


Fractal Antenna Systems, Inc. (
supplies products and solutions for the world’s most demanding wireless,
electromagnetic, and electronic applications. Backed by over six dozen
U.S., and international patents, plus patents pending, FRACTAL is the
recognized pioneer in fractal and electromagnetic technology, with
extensive research and field experience over 25 years in business. The
company is a privately held and headquartered in Bedford, Massachusetts,