Title :
Vehicle terminal antennas for mobile satellite applications
Author_Institution :
AK Electromagn. Inc., Coteau Station, Que., Canada
Abstract :
A review of three classes of antennas for data and voice terminals is presented. The first one is a conically shaped beam low-gain antenna for data terminals. Drooping dipoles, quadrifilar helices, and microstrip antennas are described. These antennas can be simple and inexpensive . The second type of mobile terminal antennas are medium gain: microstrip mechanically steered arrays, microstrip electronically steered arrays, and adaptive arrays with a simple beam-steering system. The third type is a high-gain fixed terminal antenna. The noise temperature and G/T values of some antennas are discussed. The results of the vehicle terminal antennas program at AK Electromagnetique in support of developing North American mobile and fixed satellite services are summarized
Keywords :
antenna arrays; antenna phased arrays; loop antennas; microstrip antennas; mobile antennas; mobile communication systems; satellite relay systems; AK Electromagnetique; adaptive arrays; beam-steering system; conically shaped beam low-gain antenna; data terminals; drooping dipoles; electronically steered arrays; fixed terminal antenna; high-gain; mechanically steered arrays; medium gain; microstrip antennas; mobile satellite applications; mobile terminal antennas; noise temperature; quadrifilar helices; vehicle terminal antennas; voice terminals; Adaptive arrays; Dipole antennas; Directive antennas; Microstrip antenna arrays; Microstrip antennas; Mobile antennas; Polarization; Satellite antennas; Satellite broadcasting; Vehicles;
Conference_Titel :
Vehicular Technology Conference, 1990 IEEE 40th
Conference_Location :
Orlando, FL
DOI :
10.1109/VETEC.1990.110288
