一种新型小型圆极化GPS微带天线的设计与实现

J4 ›› 2009, Vol. 36 ›› Issue (6): 1108-1113.

一种新型小型圆极化GPS微带天线的设计与实现

宋小弟^1,2;冯恩信¹;傅君眉¹

(1. 西安交通大学微波与光通信研究所，陕西西安 710049
2.华东电子工程研究所天馈部，安徽合肥 230031)

收稿日期:2008-09-27 出版日期:2009-12-20 发布日期:2010-01-20
通讯作者: 宋小弟
作者简介:宋小弟(1974-)，男，西安交通大学博士研究生，E-mail: songxd942@sina.com．
基金资助:
国家部委预研重点基金项目资助(9140A07011307DZ4801)

Design and implementation of a novel miniaturized circularly polarized GPS microstrip antenna

SONG Xiao-di^1,2;FENG En-xin¹;FU Jun-mei¹

(1. Inst. of Microwave and Optical Comm., Xi'an Jiaotong Univ., Xi'an 710049， China
2. East China Research Inst. of Electronic Eng., Hefei 230031， China)

Received:2008-09-27 Online:2009-12-20 Published:2010-01-20
Contact: SONG Xiao-di

摘要/Abstract

摘要：

设计制作了一种新颖的宽带EBG(Electromagnetic Bandgap)结构小型圆极化GPS微带贴片天线单元．采用Koch矩形分形设计圆极化GPS微带贴片天线和特定尺寸的EBG结构，一方面有效减小了天线单元的尺寸，另一方面有效抑制其工作时产生的表面波，改善了其工作性能．仿真和实测结果表明，相对于普通矩形结构的微带贴片天线单元，该分形天线单元尺寸减小了约27％.同时，采用EBG结构使工作频率上的 3dB轴比带宽增加了约30％，增益增加约 0.2dB．

关键词: 分形天线, 圆极化, EBG结构, GPS天线

Abstract:

A novel miniaturized circularly polarized microstrip antenna with the EBG structure for GPS applications is designed and constructed. The size of the circularly polarized GPS microstrip antenna desiged by the Koch rectangle fractal is reduced considerably. And the properties of bandwidth and gain are improved effectively due to the introduction of given size EGB designed by the Koch rectangle fractal. Simulation and experimental results show that, compared with the conventional rectangle structure, the proposed antenna has reduced the size by 27％, and increased the axial-ratio bandwidth by about 30％ as well as the gain by 0.2dB due to the application of the EBG structure.

Key words: fractal antenna, circularly polarized, EBG structure, GPS antennas

中图分类号:

TN822

宋小弟;冯恩信;傅君眉. 一种新型小型圆极化GPS微带天线的设计与实现[J]. J4, 2009, 36(6): 1108-1113.

SONG Xiao-di;FENG En-xin;FU Jun-mei. Design and implementation of a novel miniaturized circularly polarized GPS microstrip antenna[J]. J4, 2009, 36(6): 1108-1113.

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