具有介质覆盖层的微带贴片天线方向性研究

doi:10.3969/j.issn.1001-506X.2010.10.23

Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (10): 2124-2127.doi: 10.3969/j.issn.1001-506X.2010.10.23

具有介质覆盖层的微带贴片天线方向性研究

李彦霏，逯贵祯

中国传媒大学信息工程学院通信工程系，北京 100024

出版日期:2010-10-10 发布日期:2010-01-03

Methods for directivity enhancement of micro-patch antenna by using dielectric superstrata

LI Yanfei，LU Guizhen

Information Engineering School, Communication Univ. of China, Beijing 100024, China

Online:2010-10-10 Published:2010-01-03

摘要/Abstract

摘要：

对增加放置在法布里-珀罗谐振腔内的微带贴片天线方向性系数进行了系统的研究。仿真表明，采用介质覆盖层后天线的方向性增加了近11dB。在此基础上，分析了天线电场分布，提出了在覆盖层的不同位置采用不同的介电常数能够使相位分布曲线更加均匀的理论，从而使方向性又增加1dB。分析并给出了采用平面的介质覆盖层（dielectirc superstrata, DS）和渐变介电常数覆盖层的贴片天线方向性系数的仿真结果，并分析了天线口面的辐射效率。

Abstract:

A systematic design methodology for enhancing the directivity of microstrip patch antennas (MPA) is presented, in which MPA is used as an exciter of a Fabry-Perot (FP) resonant cavity. Simulation results show that after using dielectric superstrata as covers for the MPA, the directivity can be enhanced by almost 11dB over that one without the superstrata, and directivity can be further enhanced 1dB using graded superstrata compared with that using the uniform dielectric superstrata. Finally, the aperture efficiency of the superstrata is analyzed.

李彦霏，逯贵祯. 具有介质覆盖层的微带贴片天线方向性研究[J]. Journal of Systems Engineering and Electronics, 2010, 32(10): 2124-2127.

LI Yanfei，LU Guizhen. Methods for directivity enhancement of micro-patch antenna by using dielectric superstrata[J]. Journal of Systems Engineering and Electronics, 2010, 32(10): 2124-2127.

具有介质覆盖层的微带贴片天线方向性研究

Methods for directivity enhancement of micro-patch antenna by using dielectric superstrata

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