具备滤波效果的带开路枝节的PIFA天线设计  

PIFA Antenna with Open-ended Stub with Filtering Function

作　　者：秦祥宏 Qin Xianghong(Shenzhen Gongjin Electronics Co.,Ltd.,Shenzhen 518122,China)

机构地区：[1]深圳市共进电子股份有限公司,广东深圳518122

出　　处：《数字通信世界》2022年第10期14-17,共4页Digital Communication World

摘　　要：文章介绍了一种带并联开路枝节的滤波型PIFA天线,该天线由PIFA天线本体、双开路枝节或单开路枝节、短路段三部分组成。其中,开路枝节可以采用单枝节也可以应用多枝节形式,具体选用枝节数量的原则是对抑制频率点的隔离频宽以及抑制比。文中首先仿真模拟了常规PIFA天线的特性,然后在常规PIFA基础上增加开路枝节实现邻频的抑制度提升,最后是依据仿真模拟的结果制作实物样品,通过实物与仿真结果的测试对比,吻合度良好。本次仿真基于Wi-Fi的2.4 GHz频段,提升对带外的抑制度。A filtered PIFA antenna with parallel open microwave branches is introduced.The PIFA antenna consists of three parts:PIFA antenna,double open-ended stub or single open-ended stub and short-ended stub section.Among them,the open-ended stub can be single stub or multi stub.The specific principle of selecting the number of stub is the isolation bandwidth of the suppression frequency point and the suppression ratio.In this paper,firstly,the characteristics of conventional PIFA antenna are simulated,and then the open-ended stub are added on the basis of conventional PIFA to improve the adjacent frequency suppression.Finally,the samples are made according to the simulation results.Through the test and comparison between the samples and the simulation results,it is basically in good condition.This simulation is based on the 2.4 GHz band of Wi-Fi to improve the out of band suppression system.

关 键 词：PIFA天线 开路枝节 滤波功能 

分 类 号：TN82[电子电信—信息与通信工程] TN92