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Integrated antenna and RF payload for low cost intersatellite link using superelliptical antenna aperture with single axis gimbal
Integrated antenna and RF payload for low cost intersatellite link using superelliptical antenna aperture with single axis gimbal
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机译:使用超椭圆天线孔径和单轴万向节的低成本星际链路的集成天线和RF有效载荷
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摘要
A dual-reflector inter-satellite link (ISL) subsystem, for a communications satellite in a constellation of satellites in low earth orbit or medium earth orbit. The ISL subsystem includes a main antenna reflector which uses a single-axis gimbal to steer the main reflector only in the elevation plane. An antenna subreflector, a horn and RF feed circuitry are stationary with respect to the host satellite. The main reflector has a super-elliptical design which provides a beam shape which requires no steering in the azimuth plane, while meeting ISL signal strength requirements. By steering the main reflector only, and only in the elevation plane, the disclosed ISL subsystem delivers significantly lower size, mass, complexity and cost, and significantly greater reliability, than traditional ISL systems.
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