Mobile vehicle antenna
Abstract
The antenna concept of the land mobile satellite service (LMSS) is examined. Based on the LMSS design the ground mobile vehicle antennas must meet the following requirements: (1) low cost; (2) reasonable conformal or easily stowable in the vehicle; (3) circular polariztion; (4) transmitting at 821 to 831 MHz, and receiving at 866 to 876 MHz band; (5) omnidirectional pattern in azimuthal plane; and (6) a minimum of 3-dB gain in the angular region from 19 to 60 deg from the horizon in elevation plane. Three classes of antenna design, the crossed drooping dipole, the quadrifilar, and a microstrip array antenna are shown.
- Publication:
-
In its Land Mobile Satellite Serv. (LMSS): A Conceptual System Design and Identification of the Critical Technol. p 70-71 (SEE N82-28325 19-17
- Pub Date:
- February 1982
- Bibcode:
- 1982lmss.rept...70.
- Keywords:
-
- Antenna Design;
- Antenna Radiation Patterns;
- Communication Networks;
- Land Mobile Satellite Service;
- Polarization (Waves);
- Azimuth;
- Circular Polarization;
- Communication Satellites;
- Dipole Antennas;
- Microstrip Antennas;
- Omnidirectional Antennas;
- Wave Propagation;
- Space Communications, Spacecraft Communications, Command and Tracking