DocumentCode
279652
Title
Lowprofile antenna for NAVSTAR receivers
Author
Wood, C.
Author_Institution
Plessey Avionics, Havant, UK
fYear
1990
fDate
32883
Firstpage
42583
Lastpage
42584
Abstract
Describes the design of a low-profile antenna which is used to receive signals from NAVSTAR Global Positioning System satellites to enable a receiver on board an aircraft to calculate its position to high accuracies. The basic requirements of the NAVSTAR system are that the antenna be right-hand circularly polarised and dual frequency (1228 MHz and 1575 MHz) with a 20 MHz bandwidth at each. In addition the antenna must receive signals simultaneously from a number of satellites at elevation angles greater than 5° above the horizon. The antenna installation under consideration is a single unit externally flush-mounted on top of the fuselage of the aircraft with the thickness of the antenna being minimised to keep aerodynamic drag low
Keywords
mobile antennas; radio direction-finding; radio receivers; radionavigation; satellite antennas; 1228 MHz; 1575 MHz; 20 MHz; GPS; Global Positioning System; NAVSTAR receivers; NAVSTAR system; UHF; aircraft; bandwidth; dual frequency antenna; elevation angles; low-profile antenna; right-hand circularly polarised; satellites;
fLanguage
English
Publisher
iet
Conference_Titel
Flat Plate and Low Profile Mobile Antennas, IEE Colloquium on
Conference_Location
London
Type
conf
Filename
189643
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