| 摘要 |
PURPOSE: A serial relay method and a device are provided to receive a high-purity donor site signal through horizontally arrayed antennas, and to use exclusive radial patterns and orthogonal polarizations for transmission/receiving antennas, thereby effectively increasing mutual isolation between the antennas. CONSTITUTION: A link antenna(82) goes toward an upper station, and wherein antenna elements are horizontally arrayed to have wider half amplitudes of vertical patterns with narrower half amplitudes of horizontal patterns. A relay device(81) maintains an amount of oscillation at less than a certain level when controlling an amplification gain, and maintains an amount of output at certain level. A service antenna(83) is isolated from the link antenna(82) at certain intervals, and wherein antenna elements are vertically arrayed to have wider half amplitudes of horizontal patterns with narrower half amplitudes of vertical patterns.
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