A Hybrid Algorithm for the Synthesis of Distributed Antenna Arrays with Excitation Range Control
DOI:
https://doi.org/10.26636/jtit.2025.4.2293Keywords:
convex optimization, distributed antenna arrays, dynamic range ratio, invasive weed optimizationAbstract
Excitation coefficients with a low dynamic range ratio (DRR) are advantageous in controlling mutual coupling between the elements of an antenna array. Their use also reduces the output power loss and simplifies the design of the feeding network. In this paper, a hybrid algorithm based on invasive weed optimization and convex optimization for the synthesis of distributed arrays with two subarrays is proposed. Arrays of this type are used in numerous applications, e.g. in aircraft. A constraint is added to the optimization problem to control the DRR of the array's excitation vector. Numerical results are presented for position-only, as well as for position and excitation control approaches. The trade-off between the peak sidelobe ratio and the obtained DRR is illustrated by numerical examples.
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