摘要
基于多频通信终端设备对天线工作频段和尺寸的要求,提出了一种新型的三频段(GSM/DCS/ISM)小型平面倒F天线,并制作了实物模型.通过测量,得到的3个频段的相对带宽分别为3.4%,10.3%和2.1%.分析了在有塑料外壳和手持时对该天线特性的影响,并给出了在自由空间测量得到的方向图和增益.实验结果表明,该天线完全适用于多频无线通信系统.
The antennas must work in several bands in multi-band systems, and the size must be compact enough. Based on it, a new compact triple-band (GSM/DCS/ISM) planar inverted-F antenna (PIFA) was presented and a prototype was constructed and studied. The S11 parameters were measured, and the band-widths are 3.4%, 10.3%, and 2.1% for corresponding band, respectively. For real use, the presence of the plastic case and the hand were considered, and the resulting data of the influence were measured and discussed. The radiation patterns and gains in free space were also measured, which show that this type of PIFA is suitable for multi-band mobile communication applications.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2004年第12期1979-1981,1985,共4页
Journal of Shanghai Jiaotong University
关键词
无线通信
平面倒F天线
三频天线
小型平面天线
Antennas
Digital communication systems
Global system for mobile communications
Local area networks
