Integrated Filtering Planar Dipole Antenna Using Edge Coupled Feed
Amira El-Tokhy Ali, Yi Wang Department of Engineering Science, University of Greenwich
天线谐振元件作为耦合谐振滤波器的一个谐振极点。该耦合能够控制天线带宽,增加频率选择性。还能避免天线和滤波器之间的50Ω匹配导致的失配和带宽损失。
谐振器还作为到单平面微带偶极子的巴伦。
Traditionally the microstrip dipole is fed either using a uniplanar microstrip-to-coplanar-strip transition [10] or a multi-layer structure with the dipole arms located on the opposite sides of the substrate [11].
本文采用U型半波谐振器和一个平面半波偶极子天线。
在馈线和U型谐振器之间采用了交指型结构来获取强电容性耦合,达到增强的带宽。U型谐振器和半波偶极子中心通过边缘耦合,亦即电流峰值点(容性和感性耦合)。