期刊名称：International Journal of Antennas and Propagation
印刷版ISSN：1687-5869
电子版ISSN：1687-5877
出版年度：2010
卷号：2010
DOI：10.1155/2010/843624
出版社：Hindawi Publishing Corporation
摘要：The mutual coupling between elements of a multifrequency
dipole antenna array is experimentally investigated by 𝑆-parameter measurements and planar
near-field scanning of the radiated field. A multifrequency array with six dipoles is analyzed.
In order to reduce the coupling between dipoles, a planar metasurface is placed atop the array
acting as superstrate. The mutual coupling of the antenna elements in the absence and presence
of the superstrate is presented comparatively. Between 3 and 20 dB mutual coupling reduction
is achieved when the superstrate is used. By scanning the field radiated by the antennas and
far-field measurements of the radiation pattern, it is observed that the superstrate confines the
radiated power, increases the boresight radiation, and reduces the endfire radiation.
