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In this research, a simple satellite-tracking array antenna for ETS-VIII applications that will be used for mobile satellite communications has been investigated. The analysed circularly polarised stacked antenna is constituted of four single-fed patches sequentially rotated of 90°. By successively turning off any one of the patches, it is shown that four beams are created in the conical-cut plane at Az = 6°, 96°, 190°, and 276°. Furthermore, for an elevation El = 48° in Tokyo, the gain can reach more than 6.4 dBic on the whole azimuthal range.