FDTD方法分析新型双频平面倒F手机天线  

FDTD analysis of novel dual-band planar inverted-F antenna

作　　者：田方[1] 李东风[1] 龚中麟[1] 

机构地区：[1]北京大学电子学系,北京100871

出　　处：《通信学报》2003年第8期101-107,共7页Journal on Communications

摘　　要：设计了一种新型单馈点双频平面倒F手机天线(PIFA),用时域有限差分方法(FDTD)计算了该天线的电流分布和辐射方向图,以验证设计原理。该天线可用于GSM和DCS1800两个系统,中心工作频率分别为0.94GHz和1.8GHz,反射损失小于-10dB的阻抗带宽可达到10％以上。通过简单调节天线的两个参数,天线两个频段的中心工作频率独立可调,来消除手机设计制造误差对天线工作频率的影响。The design of a novel single-feed dual-band planar inverted-F antenna (PIFA) is presented. Current distribution and radiation patterns are calculated by the finite-difference time-domain (FDTD) method to verify the design theory. This antenna operating at 0.94GHz and l.8GHz bands is suitable for GSM and DCS1800 systems. The impedance bandwidths for -10dB return loss in the two bands are greater than 10%. By simply changing two parameters of the antenna,two centre operating frequencies can be tuned independently to remove the effect caused by the error of handset design and production.

关 键 词：平面倒F于机天线 双频 时域有限差分方法 阻抗带宽 

分 类 号：TN828.6[电子电信—信息与通信工程]