| 摘要 |
PURPOSE: An external antenna having a double waterproof structure is provided to protect an antenna module by forming an additional sealed space inside the antenna. CONSTITUTION: An external antenna(10a) having a double waterproof structure comprises a first space(22a), an antenna module, a second space(32a), an RF cable(50a), and first, second, and third packing units(60a,70a,80a). The first space is formed under an upper cover(20a). The antennal module is arranged inside the first space. The second surface is formed on the inner surface of a lower cover(30a). The RF cable transfers a signal amplified from a low-noise amplification circuit(44a) of the antennal module to the outside. The first packing unit covers the coupled surface of the upper and lower covers. The second and third packing units cover points of the top surface of a second chamber in which the RF cable passes through.
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