Optimization of a Coherent Dual-Beam Array Feed Network for Aperiodic Concentric Ring Antennas

Autor: Marco Cardenas-Juarez, David H. Covarrubias, Francisco R. Castillo-Soria, Ulises Pineda-Rico, Enrique Stevens-Navarro, Armando Arce
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Aperture
Computer science
beamforming networks
Topology (electrical circuits)
02 engineering and technology
Topology
Directivity
lcsh:Technology
Antenna array
lcsh:Chemistry
0202 electrical engineering
electronic engineering
information engineering
evolutionary computing
General Materials Science
Instrumentation
antenna synthesis
lcsh:QH301-705.5
Fluid Flow and Transfer Processes
lcsh:T
Process Chemistry and Technology
concentric rings geometry
General Engineering
020206 networking & telecommunications
lcsh:QC1-999
Computer Science Applications
Power (physics)
lcsh:Biology (General)
lcsh:QD1-999
Aperiodic graph
lcsh:TA1-2040
Systems design
020201 artificial intelligence & image processing
Antenna (radio)
lcsh:Engineering (General). Civil engineering (General)
optimization
lcsh:Physics
aperiodic arrays
dual-beam
Zdroj: Applied Sciences, Vol 11, Iss 1111, p 1111 (2021)
Applied Sciences
Volume 11
Issue 3
ISSN: 2076-3417
Popis: A dual-beam coherent feeding system design approach with a non-uniform layout on a concentric ring array is described and synthesized. In this case, the feeding system is based on a reconfigurable topology composed of a set of alternated power dividers and combiners, providing coherent in-phase outputs. Thus, in this paper, a two-beam architecture based on a coherent feeding system formed by a set of intercalated input signals feeding each circular ring in a non-uniform antenna array with multi-beam shaping and steering features is analyzed. The task of optimizing the aperiodic layout on the shared aperture based on the radii of the circular rings is realized by the differential evolution method. Numerical experiments grounded in antenna synthesis validate the capabilities and improved performance of the proposed dual-beam configuration with a non-uniform layout in contrast with its uniform counterpart, with enhanced performance on average by up to &minus
6.1 dB for sidelobe level and 3.5 dB for directivity. Additionally, the results show a significantly less complex two-beam feeding network in contrast with the case of a typical electronically scanned array&mdash
in this proposal, each direction of maximum radiation is conformed and scanned with approximately half of the control inputs.
Databáze: OpenAIRE
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