Abstract: An elastic spheroid structure includes a hollow elastic spheroid body having an elastic spheroid shell, a receiving space formed inside the elastic spheroid shell, and a through opening passing through the elastic spheroid shell and being in air communication with the receiving space. The through opening has a first predetermined shape, the through opening has a first middle portion and a plurality of first extending portions extended outwardly from the first middle portion, and the first predetermined shape of the through opening is formed by connecting the first middle portion and the first extending portions. The elastic spheroid structure further includes a solid elastic cover body disposed inside the through opening of the hollow elastic spheroid body and a connection layer disposed inside the through opening and connected between the elastic spheroid shell and the solid elastic cover body.

Abstract: An antenna includes a substrate, a signal feed portion, and a plurality of radiation units. The substrate has a first surface and a second surface. The signal feed portion is located on the substrate. The plurality of radiation units is located on the substrate, connected to the signal feed portion, and arranged in a radial shape. Each of the radiation units includes a radiation portion and a ground portion. The radiation portion is located on the first surface with one end connected to the signal feed portion. The ground portion is located on the second surface in symmetry with the radiation portion, with one end connected to the signal feed portion. A plurality of dipole antennas connected in parallel to the signal feed portion, so as to avoid a zero point generated on the single dipole antenna, such that a wave width of the antenna radiation has a large angle.