Antennas based on modified metallic photonic bandgap structures consisting of capacitively loaded wires
Antennas based on modified metallic photonic bandgap structures consisting of capacitively loaded wires
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基于由电容负载线组成的改进金属光子带隙结构的天线
DOI：
10.1002/mop.1401
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Sailing He
中科院分区：
文献类型：
--
作者：
C. Simovski;Sailing He
介绍了几种改进的金属光子带隙结构的天线系统。本文提出了一种有用的改进方法，将二维MPBG结构中的每根导线替换为由许多相同形状的导电元件组成的链。每一个这样的链形成一个有效的电容阻抗线。通过选择有效导线单位长度阻抗的合适值和改进后的MPBG结构的几何形状，获得了最大辐射效率和指向性的优化设计。最佳阻抗是通过使用各种形状的元件来实现的，包括断线元件和平面H形元件。数值结果表明，在金属背景平面存在的情况下，这种改进可以使MPGB天线的效率提高1000倍，并将MPGB结构的厚度减小到λ/3左右。©2001 John Wiley & Sons, Inc微波光学学报，31(2):394 - 394,2001。
Antenna systems based on some improved metallic photonic bandgap (MPBG) structures are introduced. A useful modification is introduced by replacing each wire in a two‐dimensional MPBG structure by a chain of many identical conducting elements of a certain shape. Each such chain forms an effective wire of capacitive impedance. The optimal design for maximal radiation efficiency and directivity is obtained by choosing an appropriate value of the impedance per unit length for the effective wire and the geometry of the modified MPBG structure. The optimal impedance is realized by using elements of various shapes, including broken wire elements and planar H‐shaped elements. Numerical results have shown that the modification can increase the efficiency of the MPGB antenna by a factor of 1000, as well as reduce the thickness of the MPGB structure to about λ/3 in the presence of a metal background plane. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 214–221, 2001.