| タイトル | Antenna system providing a spherical radiation pattern |
| 本文（外部サイト） | http://hdl.handle.net/2060/20080004286 |
| 著者（英） | Sickles, II, Louis |
| 著者所属（英） | General Electric Co. |
| 発行日 | 1993-03-16 |
| 言語 | eng |
| 内容記述 | An antenna system provides a substantially spherical radiation pattern about a structure located above ground level, by locating the individual radiation pattern of each of a plurality of individual antennae, each positioned to have a radiation pattern covering only a portion of the desired sphere, and then applying all antenna signals, during either transmission or reception time intervals, through space-diversity and/or time-diversity apparatus, to cause the patterns of all of the antennae to combine into the desired substantially-spherical pattern. The antennae may have substantially hemispherical patterns, with each antenna of a pair thereof being directed in a direction generally opposite to the other antenna of that pair. Time domain multiple access (TDMA) operation of a master system station, with transmission in different time slots for different portions of the coverage sphere, and selection of the strongest received signal from among all of the plurality N of signals simultaneously received by the plurality N of antennae, can provide the desired spherical radiation pattern in both the transmission and reception modes of operation. |
| NASA分類 | Communications and Radar |
| 権利 | No Copyright |
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