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Antenna system communication system and method for operating a terminal to receive communication from at least one satellite from a plurality of satellites in low orbit around the earth
Antenna system communication system and method for operating a terminal to receive communication from at least one satellite from a plurality of satellites in low orbit around the earth
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机译:天线系统通信系统和方法,用于操作终端以从至少一颗卫星接收来自地球低轨道的多个卫星的通信
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摘要
An antenna (70) includes a first sub-structure (72) having a major plane that is oriented at a first angle (for example, 90 DEG ) with respect to an axis (normal) that is perpendicular to the surface of the earth. The antenna also includes a plurality (for example six) of second substructures (74) individual ones of which have a local major plane that is disposed at a second angle (for example, 45 DEG ) to the major plane of the first sub-structure. Each of the plurality of sub-structures have an outwardly pointing normal from the local major plane that is oriented at a third angle (for example, 60 DEG ) around the axis from an outwardly pointing normal of an adjacent one of the sub-structures. The outwardly pointing normal of each of the plurality of sub-structures is disposed so as to point away from the axis. At least one antenna element (76) is supported by the first sub-structure and by each of the plurality of second sub-structures. Antenna elements of the first sub-structure and at least some of the plurality of second sub-structures enable a spread spectrum communication between a terminal (13) and at least one low earth orbit satellite (12) over a range of elevation angles of the low earth orbit satellite. MATH
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