EXTENSION POSSIBILITY ROD-ANTENNA

摘要

An extensible rod antenna is provided to prevent a concave plate spring from being deformed due to spatial limitation and obtain a large supporting power in case of extension of the antenna by installing the concave plate spring between an inner pipe and an outer pipe. An extensible rod antenna includes a whip antenna stage and multi-stage rod antenna. The whip antenna stage has elasticity. The multi-stage rod antenna is placed on a center of the whip antenna and includes at least one pipe stage. A concave plate spring is mounted inside an outer pipe of each of the pipe stages to slide an outer surface of an inner pipe in contact with an inner surface of the concave plate spring.