振子法和悬置微带线法.然后以PVPBG(patch and via PBG)结构为例研究了PBG结构在振子天线、微带天线和E形天线中的应用.仿真和实验结果表明PBG结构可以起到改善天线输入阻抗
增强前向辐射
抑制后向辐射
提高天线前向增益的作用.在缝耦合PVPBG结构的基础上
提出了一种新的交指PVPBG结构
其尺寸为具有相同带隙频率的缝耦合PVPBG结构的3/4.
Abstract
In this paper
three measuring methods of the characteristics of PBG structures are compared
including coplanar microstrip line method
monopole method and suspending microstrip line method.Then the PVPBG structure(as a typical example of PBG structures)is applied in monopoles、microstrip antennas and E shape antennas respectively.Simulation and experimental results show that the PBG structure can improve the input impedance of antennas
increase the front radiation
decrease the back radiation and increase the gain of antennas.Based on the Gap-Coupled PVPBG(GCPVPBG)structure
we propose a new PVPBG structure named Intercrossed Capacitor-Coupled PVPBG(ICCPVPBG)structure.The size of the ICCPVPBG structure is only 3/4 of the size of the GCPVPBG structure when they have the same band-gap.