| 摘要 |
The present invention relates to a multi-frequency public antenna and a portable terminal capable of being miniaturized, small hardening, and saving space for storage; comprising a resonance circuit in a middle part of an antenna; removing the resonance circuit of a communication device; and easily simplifying the structure. The multi-frequency public antenna is installed in an antenna element unit. The multi-frequency public antenna comprises an upper connector, a lower connector, a bobbin, an insulation material, and a coil. The upper connector applies an electric current to the antenna element unit. The lower connector is installed in a current supply unit and applies the electric current to the current supply unit. The bobbin is protruded from the lower connector by applying the electric current to the upper connector. The insulation material insulates the lower connector and the bobbin in an insulation point of the lower connector and the bobbin. The coil is helically wound in the bobbin. The coil comprises an insulation coating of which an end unit of one side is electrically connected to the upper connector and an end unit of the other side is electrically connected to the lower connector. |
