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KuStream 1000 exceeds
regulatory requirements
KuStream 1000 is a bi-directional Ku band Antenna System for high data rate services aboard aircraft,
offering excellent performance in full compliance with relevant FCC criteria. Its unique pointing and
tracking solution enables uninterrupted operations at maximum data rates. This creates ultimate
passenger satisfaction and results in maximum value for service providers and operators
Background tracking solution which combines leading-edge produce airborne broadband antennas for in-
In a satellite based airborne connectivity system, mechanical and electronics engineering with a flight connectivity. The partnership aims at
the antenna has to collect signals sent down to closed-loop control. Precision backlash-free delivering products that are technologically
the aircraft and transmit information up to the gears as well as advanced motor hardware and superior within shortest time-to-market.
satellite. In Ku band, the latter is a technological control concepts ensure accurate pointing, KuStream 1000 is the first joint development:
challenge: The required radiated power is whereas the closed-loop control provides for A bi-directional Ku band Antenna System for high
considerable and may thus be emitted only into precise tracking of the desired satellite - all-in-all data rate services, e.g. internet, e-mail or IP
the right direction i.e. to the desired satellite. resulting in uninterrupted operations in full streaming applications.
Adjacent satellites must not receive this power, accordance with FCC requirements. QEST‘s contribution includes core RF
as this would inevitably perturb their operations.
This is comparable to the high beam lights of a
car - those also must not blind other road users.
Therefore, several regulations exist for airborne
Ku band antenna operations in transmit mode:
ETSI has issued rules for Europe, and there are
ITU recommendations for world-wide operations.
The most stringent requirements have been
established by the FCC for the United States.
Technological approach
The solution basically consists of two parts: As a
prerequisite, the shape of the transmit beam of a
Ku band antenna has to be designed properly:
Power must be radiated in a focused way
(comparable to a sharp laser beam instead of a
broad beam of a torch light) to hit only the
desired satellite. The second part of the solution
is the permanent accurate pointing and tracking
of the antenna to that satellite to compensate
aircraft flight manoeuvres, shaking due to
turbulences etc (like always keeping the laser
beam pointed to the bull’s eye).
Milestones components such as the antenna aperture and
KuStream 1000 solution Assembly of the first KuStream 1000 signal processing modules. TECOM is
Due to ingenious design and engineering of the demonstrator unit took place in December 2008. responsible for antenna positioning and control
KuStream 1000 antenna aperture (the part that Since January 2009, interested customers get subsystems, overall systems engineering, product
collects and emits power), the required focused, fully functional system demos. TECOM / QEST qualification, certification and after-sales support.
transmit beam shapes can reliably be generated. are currently finalizing a prototype for a flight test The KuStream 1000 Antenna System
This has been proven in extensive anechoic scheduled in spring 2009. After that, comprises three LRUs: Satellite Antenna
chamber tests: The aperture has produced qualification units will be prepared; start of serial Assembly, Antenna Control Unit, and High
outstanding receive and transmit performance production is planned around midyear. Power Transceiver.
results; it exceeds all relevant FCC criteria for Words: By Michael Stobinski, Director Sales
airborne Ku band antennas in transmit mode up Partnership TECOM-QEST & Marketing, QEST GmbH
to a geographical skew performance In September 2008, German antenna developer
(compensating the aircraft’s inclination relative to QEST Quantenelektronische Systeme GmbH and See KuStream 1000 at
www.kustream.com
the satellite orbit) of min. +/- 35 degrees. US-based antenna systems company TECOM
KuStream 1000 features a pointing and Industries teamed up to jointly market and See us on Stand 6A40
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