Journal article
Coupling reduction between dipole antenna elements by using a planar meta-surface
The mutual coupling between dipole antenna array elements using a planar meta-surface as superstrate is experimentally investigated. The meta-surface is based on grids of short metal strips and continuous wires. A comparison between the mutual coupling when the dipoles are radiating in free space and in presence of the superstrate is presented.
On average, between 3 to 14 dB reduction of the mutual coupling is achieved when the superstrate is used. The effect of the mutual coupling on the radiation performance of the array is studied by spherical near-field measurements of the radiation pattern when one driven dipole is fed and the others are matched with 50 Omega loads.
The back-projected field on the aperture and on the E-plane is shown.
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2009 |
| Pages: | 383-394 |
| ISSN: | 15582221 and 0018926x |
| Types: | Journal article |
| DOI: | 10.1109/TAP.2008.2011249 |
| ORCIDs: | Breinbjerg, Olav |
Antenna arrays Apertures Dielectric substrates Dipole antennas Metamaterials Microstrip antennas Periodic structures Space technology Wires antenna feeds antenna radiation patterns coupling reduction dipole antenna arrays dipole antenna element electromagnetic coupling meta-surface metal strip mutual coupling planar meta-surface radiation pattern wire antennas
