Aerospace & Defense Technology - August 2022 - 31

RF & Microwave Technology
On the Heels of Breakthrough Trials
Isotropic Systems' multi-link antenna
enabled voice, video, and data
transmissions over concurrent two-way
connections to SES satellites in geosynchronous
(GEO) and medium Earth
(MEO) orbits during military-grade trials
at the U.S. Army's proving grounds
in Aberdeen, Maryland. The terminal
has also opened the door to all-orbit
connectivity following successful tests
that delivered bi-directional traffic
over Telesat's phase 1 low Earth orbit
(LEO) satellite while concurrently
transporting communications over a
GEO satellite.
The links coming from this single
terminal use patented optics lens technology
to simultaneously point to different
satellites over different frequencies
across commercial, government
and military networks - all without
compromising performance. These trials
will lead to the commercial rollout
of the first military-grade, multi-link
mobility Ka-band antenna later this
year. The GM2000 terminal unlocks
highly anticipated communications
capabilities not only for defense initiatives
but ultimately across a wide
range of sectors including maritime,
enterprise, government, and land
mobility markets.
How it Works
Commercial and government engineers
have tried to develop full-performance
multi-link antennas for years.
When Isotropic Systems initiated the
development of their platform, they
took a unique approach by pioneering
a new deep tech sector called transformational
optics.
They started by determining the exact
behavior they wanted from RF energy,
radio waves. That resulted in a series of
equations that defined what needs to happen
within a specified shape to get that
desired behavior. Once they solved those
equations, however, what they ended up
with is material that actually doesn't exist
in nature. That's a problem if you want to
make a real antenna from it!
Some workarounds to this challenge
included using metamaterials, but they
come with the significant drawbacks of
being lossy and narrowband. One way
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to solve those equations was by using
broadband, low-loss, isotropic (hence
the name) materials. Ultimately, they
ended up with a unique optimal beam
former design that is at the core of all
their multi-link antenna products.
In essence Isotropic Solutions is
enabling what the satellite industry
forgot to do a long time ago - mesh
satellite networks together to allow for
empowering levels of interoperability.
Can you imagine carrying five cell
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Aerospace & Defense Technology - August 2022

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