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Record Details

Record 15 of 406
Land vehicle antennas for satellite mobile communications
Author and Affiliation:
Haddad, H. A.(Ball Aerospace Systems Div., Boulder, CO, United States)
Paschen, D.(Ball Aerospace Systems Div., Boulder, CO, United States)
Pieper, B. V.(Ball Corp., Ball Aerospace Systems Div., Boulder, CO, United States)
Abstract: Antenna designs applicable to future satellite mobile vehicle communications are examined. Microstrip disk, quadrifilar helix, cylindrical microstrip, and inverted V and U crossed-dipole low gain antennas (3-5 dBic) that provide omnidirectional coverage are described. Diagrams of medium gain antenna (9-12 dBic) concepts are presented; the antennas are classified into three types: (1) electronically steered with digital phase shifters; (2) electronically switched with switchable power divider/combiner; and (3) mechanically steered with motor. The operating characteristics of a conformal antenna with electronic beam steering and a nonconformal design with mechanical steering are evaluated with respect to isolation levels in a multiple satellite system. Vehicle antenna pointing systems and antenna system costs are investigated.
Publication Date: Jan 01, 1985
Document ID:
19860049211
(Acquired Nov 28, 1995)
Accession Number: 86A33949
Subject Category: COMMUNICATIONS AND RADAR
Document Type: Conference Paper
Publication Information: (SEE A86-33901)
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Ball Aerospace Systems Div.; Boulder, CO, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ANTENNA ARRAYS; LAND MOBILE SATELLITE SERVICE; MOBILE COMMUNICATION SYSTEMS; MOTOR VEHICLES; SATELLITE TRANSMISSION; ANTENNA RADIATION PATTERNS; COSTS; MICROSTRIP DEVICES; PERFORMANCE; PHASED ARRAYS
Imprint And Other Notes: IN: GLOBECOM '85 - Global Telecommunications Conference, New Orleans, LA, December 2-5, 1985, Conference Record. Volume 3 (A86-33901 15-32). New York, Institute of Electrical and Electronics Engineers, Inc., 1985, p. 1172-1176. NASA-supported research.
Availability Source: Other Sources
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