Experimental verification of the reduction of coupling between dipole antennas by using a woodpile substrate

In this paper, the mutual coupling between dipole antennas placed on top of a woodpile structure is experimentally investigated. The coupling between dipoles backed by a woodpile substrate is compared with that obtained when the dipole antennas are placed on a dielectric substrate and when they radi...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2006-07, Vol.54 (7), p.2105-2112, Article 2105
Main Authors: Ederra, Inigo, Pascual, Beatriz Martinez, Labajos, Ana Belen, Teniente, Jorge, Gonzalo, Ramon, Maagt, Peter de
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Applied sciences
Couplings
Dielectric substrates
Dipole antennas
Electromagnetic bandgap (EBG) technology
Exact sciences and technology
imaging array
Metamaterials
mutual coupling
Periodic structures
planar antennas
Radiocommunications
Substrates
Telecommunications
Telecommunications and information theory
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Summary:In this paper, the mutual coupling between dipole antennas placed on top of a woodpile structure is experimentally investigated. The coupling between dipoles backed by a woodpile substrate is compared with that obtained when the dipole antennas are placed on a dielectric substrate and when they radiate into free space. On average, between 2 and 7 dB reduction of the mutual coupling is achieved with respect to the dielectric substrate case when the woodpile substrate is used. The free space coupling is also reduced in the H-plane configuration case. However, the E-plane coupling slightly increases due to modification of the radiation pattern. Imaging array applications could potentially benefit from the use of EBG substrates due to the improved isolation between pixels.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2006.877192