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Symmetry, XPD, and port isolation in an ACMPA array with dual linear polarization
Author(s) -
TorresSánchez Roberto,
CasaresMiranda Francisco P.,
MárquezSegura Enrique,
Otero Pablo
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22516
Subject(s) - directivity , planar , port (circuit theory) , isolation (microbiology) , microwave , polarization (electrochemistry) , microstrip , aperture (computer memory) , physics , antenna array , optics , computer science , electronic engineering , engineering , telecommunications , antenna (radio) , acoustics , chemistry , computer graphics (images) , microbiology and biotechnology , biology
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