Radiation Efficiency Issues in Planar Antennas on Electrically Thick Substrates and Solutions
Radiation Efficiency Issues in Planar Antennas on Electrically Thick Substrates and Solutions
复制标题
电厚基板上平面天线的辐射效率问题及解决方案
DOI：
--
复制
发表时间：
2013
影响因子：
5.7
通讯作者：
C. Caloz
中科院分区：
文献类型：
--
作者：
A. Shahvarpour;Alejandro Álvarez Melcón;C. Caloz
该论文解决了电厚基板上平面天线的辐射效率问题。首先，分析了接地和不接地基板上无穷小水平电偶极子的辐射效率与基板电厚度的非单调依赖性。接下来，借助一种新颖的基底偶极子方法解释了观察到的辐射效率的现象学，该方法将实际结构简化为由原始偶极子和辐射到自由空间的基底偶极子组成的等效源偶极子。最后，研究了在效率最小的电厚度下提高效率的两种解决方案。
The paper addresses the problem of the radiation efficiency of planar antennas on electrically thick substrates. First, the non-monotonic dependency of the radiation efficiency of an infinitesimal horizontal electric dipole on grounded and ungrounded substrates versus the substrate electrical thickness is analyzed. Next, the phenomenology of the observed radiation efficiency is explained with the help of a novel substrate dipole approach, which reduces the actual structure to an equivalent source dipole composed of the original dipole and the substrate dipole radiating into free space. Finally, two solutions for enhancing the efficiency at electrical thicknesses where the efficiency is minimal are studied.