Title :
Reduction of mutual coupling between closely-packed antenna elements using defected ground structure
Author :
Zhu, FuGuo ; Xu, Jiadong ; Xu, Qian
Author_Institution :
Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
A simple ground plane structure that can reduce mutual coupling between closely-packed antenna elements is proposed. The structure consists of a dumb-bell-like pattern etched in a single ground plane. It is found that isolation of more than -40 dB can be achieved between two parallel individual planar inverted F antennas (PIFAs) sharing a common ground plane. Comparison of the proposed dumb-bell-like defected ground structure (DGS) with other approaches shows its unique capability of reducing mutual coupling. Influence of the designed DGS on radiation pattern and surface current distribution on the ground plane is also investigated.
Keywords :
antenna radiation patterns; current distribution; planar inverted-F antennas; closely-packed antenna elements; defected ground structure; dumb-bell-like pattern etching; mutual coupling reduction; parallel individual planar inverted F antennas; radiation pattern; surface current distribution; Bandwidth; Current distribution; Dielectric losses; Etching; Geometry; MIMO; Mutual coupling; Patch antennas; Resonant frequency; Surface waves; DGS; PIFAs; mutual coupling;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4076-4
DOI :
10.1109/MAPE.2009.5355659
