Vehicle Antenna For Satellite Communication

摘要

This invention discloses a design and implementation of an X-band antenna optimized for a moving vehicle to communicate with a stationary orbit satellite. The new antenna design employs unique circuit boards that contain dipole elements, power dividers, pin diode switches and digital phase shifters. The circuit boards perform together as an array to produce high gain beams. Depending on the antenna performance needs, several antenna boards may be required. The circuit boards' dimensions are all identical containing round disks of equal diameters. The dipole radiating elements are located near the outer edge of the board. They are designed to perform circular type polarization. By increasing the diameter of the board and a number of boards, or a combination of the two, one can achieve any desired beam shape that may be required. The disclosure design approach is unique and flexible; for this reason, an eight circuit board vehicle antenna has been configured. The disclosure antenna body is a cylindrical shaped structure which is having a 4.25 inch in diameter and 8.50 inch in height. Similar design approach may be applied for frequencies other than X-band. Outstanding characteristics of the disclosure antenna are high performance, rigid body and low cost.