Title :
Quadrifilar-curl antenna for the "Big-LEO" mobile satellite service system
Author :
Colburn, J.S. ; Rahmat Samii, Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
The mobile satellite communications arena has received considerable attention as the next step for personal wireless communications systems. The use of satellites to provide world wide coverage will allow for many new market areas. But the additional opportunities being provided by satellite based personal communications systems has brought additional challenges. One of the new challenges facing the antenna engineers is to provide reasonably sized antennas that deliver acceptable electrical performance for the mobile terminal. This paper reports on work at UCLA to develop personal communication antennas for the big low Earth orbit (Big-LEO) satellite system mobile terminal. The radiators for this system require broad radiation patterns with good circular polarization characteristics, for the particular uplink and downlink bands of 1.61-1.6265 GHz and 2.4835-2.5 GHz respectively.
Keywords :
electromagnetic wave polarisation; helical antennas; mobile antennas; mobile satellite communication; personal communication networks; satellite antennas; 1.61 to 1.6265 GHz; 2.4835 to 2.5 GHz; Big-LEO mobile satellite service system; UCLA; UHF; broad radiation patterns; circular polarization characteristics; downlink band; electrical performance; low Earth orbit; mobile satellite communications; mobile terminal; personal communication antennas; personal wireless communications systems; quadrifilar-curl antenna; radiators; uplink band; world wide coverage; Antenna feeds; Artificial satellites; Downlink; Geometry; Impedance; Low earth orbit satellites; Mobile antennas; Polarization; Satellite antennas; Satellite communication;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549785
