边缘开槽多频段天线设计

Design of multi-band antenna slotting on the edge

摘要:

针对手持无线设备的发展需求，设计了一种能够用于北斗卫星导航系统、全球定位系统和无线局域网的多频段天线。采用平面倒F天线的结构方式，在辐射片边缘开2个L形槽，使它在1.575 GHz,2.445 GHz和5.32 GHz三个频段能够有效工作，且拥有足够的带宽，满足上述3个系统对频率的要求。利用电磁仿真软件分析了辐射体的电流分布，研究了槽的位置、形状和尺寸对天线性能的影响，实验验证了所设计天线的性能。

Abstract:

According to the development of handheld wireless devices，a multi-band antenna is designed. It can be applied to the Beidou satellite navigation system, Global Positioning System(GPS)，and Wireless Local Area Networks(WLAN). The structure is based on Planar Inverted F-shaped Antenna(PIFA). Two L-shaped slots are grooved around the edge of the radiation patch. The antenna can work at 1.575 GHz,2.445 GHz and 5.32 GHz with wide enough bandwidth，and meet the frequency requirements of above mentioned wireless systems. The distribution of the current on the patch surface is analyzed，and performance of antenna influenced by the location，shape and size of slots is investigated by using electromagnetic simulation software. Experimental results verify the properties of this design.