Low-Sidelobe Patterns From Small, Low-Loss Uniformly Fed Linear Arrays Illuminating Parasitic Dipoles

The complexity of antenna array feed networks can be reduced by reducing the number of radiating elements and having the remainder illuminate an auxiliary array of parasitic elements. The performance of such antennas can be optimized by optimization of their geometry. Here we consider parasitic line...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2009-05, Vol.57 (5), p.1584-1586
Main Authors: Alvarez-Folgueiras, M., Rodriguez-Gonzalez, J.A., Ares-Pena, F.
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna feeds
Antenna radiation patterns
Antennas
Applied sciences
Arrays
Computer simulation
Dipole antennas
Dipoles
Directivity
Exact sciences and technology
Geometry
Joining
Linear antenna arrays
Linear arrays
Network synthesis
Optimization
parasitic antennas
Physics
Radiocommunications
simulated annealing
Telecommunications
Telecommunications and information theory
Vectors
Voltage
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Summary:The complexity of antenna array feed networks can be reduced by reducing the number of radiating elements and having the remainder illuminate an auxiliary array of parasitic elements. The performance of such antennas can be optimized by optimization of their geometry. Here we consider parasitic linear arrays of dipoles illuminated by smaller uniformly fed linear arrays so as to generate low-sidelobe sum patterns with good directivity. The results of a FEKO simulation validating the accuracy of the coupling model are presented, and the influence of the relative numbers of active and parasitic dipoles is discussed.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2009.2016804