基于电容耦合馈电振子类微带天线的设计  

Low Profile Patch Antennas with Vertical Monopole-like Radiation Patterns Based on Capacitive Coupling Structures

作　　者：邓昌良[1] 李平辉[2] 孙黎明[3] 曹文权[4] 

机构地区：[1]解放军理工大学通信工程学院研究生3队 [2]解放军理工大学通信工程学院 [3]中国人民解放军73306部队 [4]解放军理工大学通信工程学院研究生4队

出　　处：《军事通信技术》2013年第1期26-29,104,共5页Journal of Military Communications Technology

摘　　要：电容耦合激励(CCS)的方法具有保持天线低剖面,有利于天线的匹配,容易进一步实现圆极化(CP)的优点。文章首先利用电容耦合馈电的概念,激励圆形微带贴片天线的TM01模式,设计实现具有低剖面水平全向振子类方向图的垂直线极化(LP)天线。然后,在圆形贴片加载四个臂枝节,提供具有等幅并90°相差的水平极化波,实现了一个水平全向圆极化GPS L1波段的振子型贴片天线。最后制作了天线实物,实测与仿真数据吻合良好,这类圆极化天线具有低剖面,易制作的优点,适合作GPS通信天线。A low profile Linearly Polarized（LP） patch antenna with a vertical monopole-like radiation pattern was proposed. Capacitive Coupling Structures （CCS） introduced to feed the patch antenna compactly could enable the polarization flexibility without much change of the near-and far-field characteristics. Then, four curved branches were added around the circular radiating patch to employ a horizontal wave of the same amplitude and 90 degree phase difference, and thus the antenna with Circularly Polarized（CP） characteristic was realized. The antenna prototypes were fabricated to verify the designs. The measured and simulated results are in good agreement. Both the LP and CP antennas own the feature of low-profile （less than 0. 05λ） which is a good candidate for GPS communication.

关 键 词：电容耦合结构 振子型 圆极化 低剖面 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]