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A comparison between basis functions for the efficient invasive weed optimization‐based optimization of phase‐only linear array patterns
Author(s) -
Angeletti Piero,
Berretti Lisa,
Maddio Stefano,
Pelosi Giuseppe,
Selleri Stefano,
Toso Giovanni
Publication year - 2021
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.32778
Subject(s) - tapering , basis (linear algebra) , phase (matter) , optimization problem , computer science , mathematical optimization , phased array , nonlinear programming , stochastic optimization , power (physics) , nonlinear system , electronic engineering , mathematics , engineering , telecommunications , physics , geometry , computer graphics (images) , quantum mechanics , antenna (radio)
Synthesis of phased array antennas generating shaped patterns by exploiting phase tapering only is a challenging problem. A phase‐only tapering permits maximizing the DC to RF power efficiency and results to be particularly useful in satellite applications with stringent constraints on the available power. Such a synthesis is a highly nonlinear problem most effectively addressed via stochastic optimization techniques. In this paper several basis functions to represent the phase distribution are traded‐off and compared, within an invasive weed optimization paradigm.