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UHF coplanar-slot antenna for aircraft-to-satellite data communicationsThe initiative for starting the Aircraft-to-Satellite Data Relay (ASDAR) Program came from a recognition that much of the world's weather originates in the data sparse area of the tropics which are primarily ocean. The ASDAR system consists of (1) a data acquisition and control unit to acquire, store and format these data; (2) a clock to time the data sampling and transmission periods; and (3) a transmitter and low-profile upper hemisphere coverage antenna to relay the formatted data via satellite to the National Weather Service ground stations, as shown schematically. The low-profile antenna is a conformal antenna based on the coplanar-slot approach. The antenna is circular polarized and has an on-axis gain of nearly 2.5 dB and a HPBW greater than 90 deg. The discussion covers antenna design, radiation characteristics, flight testing, and system performance.
Document ID
19800028894
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Myhre, R. W.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1979
Subject Category
Aircraft Communications And Navigation
Meeting Information
Meeting: Printed Circuit Antenna Technology Workshop
Location: Las Cruces, NM
Start Date: October 17, 1979
End Date: October 19, 1979
Sponsors: New Mexico State University and U.S. Army
Accession Number
80A13064
Distribution Limits
Public
Copyright
Other

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