一种三频PIFA手机天线设计

Triple-band planar inverted F antenna design

为实现手机小型化、多频段工作,利用SEMCAD X软件,设计一种平面倒F天线(PI-FA)。该天线采用同轴线馈电,可同时工作在GSM 900 MHz、DCS 1 800 MHz及PCS 1 900 MHz三个频段,相对带宽分别为14.4%(8.580 4～9.912 4 MHz)、9.6%(1.680 28～1.850 00 GHz)、17.9%(1.850 00～2.213 08 GHz)。实测回波损耗特性、阻抗特性、E面水平极化方向等电磁辐射性能与仿真结果基本相符。该天线可满足多频手机应用要求。

Aimed at miniaturization of mobile phone and many frequency band,this paper introduces the planar inverted F antenna designed using SEMCAD X software.The antenna fed by a coaxial,allows a simultaneous operation at GSM 900 MHz,DCS 1 800 MHz and PCS 1 900 MHz three bands and has the relative bandwidth to the antenna of 14.4%（8.580 4~9.912 4 MHz）,9.6%（1.680 28~1.850 00 GHz） and 17.9%（1.850 00~2.213 08 GHz） respectively.Simulation and test results indicate that electromagnetic radiation performance,such as characteristic impedance,return loss characteristics,E horizontal polarization direction is up to requirements of the mobile phone antenna application.