基于高阻抗表面PBG结构微带天线的设计与分析  

Design and Analysis of Microstrip Antenna Based on Photonic Band-gap Structure with High Impedance Surface

作　　者：汪仲清[1] 彭丽丹[2] 李宝[2] 徐荣森[3] 

机构地区：[1]重庆邮电大学数理学院,重庆400065 [2]重庆邮电大学光电工程学院,重庆400065 [3]西安工程大学电子信息学院,西安710048

出　　处：《半导体光电》2013年第3期424-427,共4页Semiconductor Optoelectronics

基　　金：重庆市自然科学基金项目(CSTC2011jjA50016)

摘　　要：以高介电常数介质为基底,利用辐射贴片开槽和微带馈电技术,设计了一款尺寸仅为16mm×12.45mm的小型微带天线。通过在此天线微带贴片周围加载高阻抗表面型光子晶体,有效抑制了表面波,改善了以高介电常数介质为基底的贴片天线的性能,实现了一款多频小型化PBG天线。HFSS仿真结果表明,加载高阻抗表面结构后的微带天线出现了三个谐振频点,分别为2.74、2.86和3.80GHz,其对应的增益分别达到6.02、8.38和5.69dB。所设计的光子晶体天线物理尺寸较小,方向性良好且具有多频特性,因此可为实际通信天线的应用提供参考。Based on dielectric substrate with high dielectric constant,a miniaturized microstrip antenna with the size of only 16 mm×12.45 mm was designed with the techniques of grooving the patch and microstrip feed.By loading the high impedance surface around the patch,the surface wave was suppressed effectively and the antenna performance was improved,then a multi-frequency and miniaturized antenna based on photonic band-gap（PBG） was realized.Simulation results obtained by HFSS show that,the microstrip antenna based on high impedance surface structure has three resonant frequencies： 2.74 GHz,2.86 GHz and 3.80 GHz,and the corresponding gains are 6.02 dB,8.83 dB and 5.69 dB,respectively.The antenna based on PBG owns the characteristics of smaller size,good radiation performance and multi-frequency,which can provide reference for practical communication applications.

关 键 词：光子晶体 PBG 微带天线 增益 

分 类 号：TN82[电子电信—信息与通信工程]