| 摘要 |
PURPOSE: A portable satellite antenna is provided to secure a stable movement in horizontal and vertical directions of a satellite and to prevent a twist of an electric wire for connecting a satellite antenna and a main substrate by making a rotation of a horizontal direction be rotated by a predetermined direction and then be rotated in an opposite direction. CONSTITUTION: A rotary rod(32) is put on an upper surface of a support(31) so as to be rotated, and a rotary gear is inserted in a center of the rotary rod(32). A rotary piece(41) is coupled with both ends of the rotary rod and makes an antenna(4) rotate upward and downward according to a rotation direction of the rotary rod(32). The first driving motor(35) rotates a warm gear(34), which is engaged with the rotary gear, in forward and backward directions. A fixing gear(12) is fixed at an upper center of a fixing plate(1). A rotor(13) is coupled at an upper part of the fixing gear and is coupled with a rotary plate(2) by a bolt. A pair of guide projections are projected from a lower surface of the rotary plate, and a guide makes a moving projection(18) shifted between the guide projects when the rotary plate is rotated. A guide road(17) is formed on the fixing plate. The moving projection(18) is inserted on the guide road and conducts a reciprocation movement in the guide road. The second driving motor(15) is installed at one side of the fixing gear and is driven by a control voltage from a control unit so as to rotate the rotary plate by rotating the driving gear(14) in forward and backward directions. The control unit comprises a reference satellite and stored location information of a satellite.
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