Omni variable antenna

An omni variable antenna is provided to implement the optimum radiation pattern with low cost by changing the shape of the electromagnetic radiation pattern variously. An omni variable antenna includes an omni antenna(100), upper and lower support members(102a,102b), and first and second reflective plates(104a,104b). The omni antenna has a circular pole shape. The omni antenna outputs the electromagnetic wave of the regular radiation pattern. The upper and lower support members are rotatably installed in the upper and lower parts of the omni antenna. The first and second reflective plates are connected to the upper and lower support members. The first and second reflective plates change the radiation pattern of the electromagnetic wave by reflecting the electromagnetic wave outputted through the omin antenna. The omni variable antenna is a horizontal beam omni variable antenna.