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A16 - Antenna technologies for communications services from stratospheric platforms


High Altitude Platforms (HAPs) - platforms located in the
stratosphere - are currently gaining increasing attention as a means
of delivering communications services. The economic viability of a
communications network is dependant on its capacity to serve a
large number of users. For HAPs, this capacity is directly related to
the properties of the antennas on both the platform and those used
at ground stations. Of particular importance is the extent to which a
radio channel can be re-used in different spatial regions, which gives
rise to the adoption of cellular channel re-use schemes. The findings
of a European HAPs project (HeliNet) will be summarised, where
antennas have been developed for a broadband communications
payload which will be limited in power and weight.

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