Symmetry, XPD, and port isolation in an ACMPA array with dual linear polarization

Aperture coupled microstrip patch antennas (ACMPA) are very convenient array elements for designing high directivity planar antennas. Dual polarization ACMPA arrays for Direct Broadcasting Services (DBS) have the problems of low cross‐polar discrimination (XPD) and port isolation. In this work, the...

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Bibliographic Details
Published in:Microwave and optical technology letters 2007-07, Vol.49 (7), p.1722-1727
Main Authors: Torres-Sánchez, Roberto, Casares-Miranda, Francisco P., Márquez-Segura, Enrique, Otero, Pablo
Format: Article
Language:English
Subjects:
aperture coupled antenna
dual polarization
port isolation
XPD
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Summary:Aperture coupled microstrip patch antennas (ACMPA) are very convenient array elements for designing high directivity planar antennas. Dual polarization ACMPA arrays for Direct Broadcasting Services (DBS) have the problems of low cross‐polar discrimination (XPD) and port isolation. In this work, the relationships between feed symmetry and the values of XPD and Port Isolation are investigated. A particular feeding structure, which optimizes XPD and Port Isolation, is proposed. An 4 × 4 array that operates at the European DBS frequencies has been designed, built, and measured to demonstrate the effectiveness of the proposed structure. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1722–1727, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22516
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.22516