Design of an internal eightband antenna for mobile phones

A novel eightband internal antenna is proposed for personal mobile handset terminal application. In the design, the principle of planar InvertedF (PIantennaFA) and various strips are used to achieve miniaturization and multiband operation. Meanwhile, the effects on the antenna performance of some important structure parameters are also analyzed. The simulated results show that the performance of the antenna is suitable for internal eight wireless communication services. In addition, the antenna has omnidirection radiation patterns, high gain and high radiation efficiency, and each operating frequency can be easily obtained by controlling the length of corresponding elements. The prototype of the antenna is fabricated and tested. The simulation and measurement results of the proposed antenna are in a agood agreement. The designed antenna is compact in size and adjusts convenience, and it is good candidate for the application of the handset terminal in wireless communication.