EP 0540125 A1 19930505 - Satellite antenna system.
Title (en)
Satellite antenna system.
Title (de)
Antennensystem für Satelliten-Kommunikation.
Title (fr)
Système d'antenne pour communication d'un satéllite.
Publication
Application
Priority
FI 915133 A 19911030
Abstract (en)
The invention relates to a satellite antenna system, particularly for land mobile voice communications, provided with a radiator unit (1), which is steerable to the satellite in the azimuth plane. According to the invention, the radiator unit (1) comprises two antenna elements (14, 15) and a ground plane (16); the said elements are formed of circular, planar, conductive plates and terminated to a load; they are turned at an angle of 180 DEG with respect to each other and evenly spaced at a standard distance from the ground plate. The radiator unit is used for receiving and transmitting circularly polarized electromagnetic radiation. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 1/32 (2006.01); H01Q 3/08 (2006.01); H01Q 9/04 (2006.01)
CPC (source: EP)
H01Q 1/3275 (2013.01); H01Q 3/08 (2013.01); H01Q 9/0428 (2013.01)
Citation (search report)
- [Y] US 4881078 A 19891114 - YAMANE TOSHINOBU [JP], et al
- [Y] IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION vol. 37, no. 3, March 1989, NEW YORK US pages 281 - 288 DREWNIAK ET AL. 'ANSERLIN:A Broad-Band,Low_Profile,Circularly Polarized Antenna'
- [A] NTIS TECH NOTES May 1990, SPRINGFIELD, VA US pages 394 - 395 BELL ET AL. 'Mechanically-Steered,Mobile Satellite-Tracking Antenna'
- [A] 1987 INTERNATIONAL SYMPOSIUM DIGEST ANTENNAS AND PROPAGATION vol. II, June 1987, BLACKSBURG/USA pages 894 - 897 HUANG ET AL. 'L-BAND SATELLITE COMMUNICATION ANTENNAS FOR U.S. COAST GUARD BOATS,LAND VEHICLES,AND AIRCRAFT'
- [A] 37TH IEEE VEHICULAR TECHNOLOGY CONFERENCE June 1987, TAMPA,FLORIDA pages 113 - 117 HUANG 'L-BAND PHASED ARRAY ANTENNAS FOR MOBILE SATELLITE COMMUNICATIONS'
- [A] THE RECORD OF THE IEEE 1990 INTERNATIONAL RADAR CONFERENCE May 1990, ARLINGTON,VIRGINIA pages 496 - 500 WATKINS ET AL. 'EXPERIMENTAL INVESTIGATION OF BROAD-BAND MICROSTRIP ANTENNAS'
- [A] 1987 INTERNATIONAL SYMPOSIUM DIGEST ANTENNAS AND PROPAGATION vol. II, June 1987, BLACKSBURG,USA pages 798 - 801 DREWNIAK ET AL. 'POWER DIVISION BY ELEMENT DESIGN IN A CIRCULARLY POLARIZED,SERIES-FED ARRAY'
Designated contracting state (EPC)
BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0540125 A1 19930505; FI 90927 B 19931231; FI 90927 C 19940411; FI 915133 A0 19911030; FI 915133 A 19930501
DOCDB simple family (application)
EP 92203337 A 19921029; FI 915133 A 19911030