IEEE Transactions on Antennas and Propagation · 2007 · 94 citations · 11 references
EngineeringComputational EngineeringElectrical EngineeringAntennasComputer-aided DesignOptimizationAntenna DesignAntenna SimulationEvolutionary OptimizationLens SystemsMicrowave AntennasPhysical OpticsAntenna Design OptimizationAperture-coupled Microstrip AntennasFar-field RadiationGenetic Algorithm Based DesignGenetic Algorithm OptimizationGlobal Search AlgorithmsIntegrated AntennasLens Design
The paper presents a computer‑aided design tool for optimizing three‑dimensional integrated lens antennas. The tool employs a genetic algorithm coupled to a hybrid geometrical/physical optics analysis and is validated by optimizing and fabricating two single‑material ILAs at 28 GHz fed by aperture‑coupled microstrip patch antennas. The study shows that the GA‑based design yields 3‑D shaped ILAs radiating sectoral and elliptical Gaussian beams, with lens dimensions and internal reflections influencing far‑field patterns, and experimental results agree with GO/PO and FDTD predictions, confirming the tool’s validity.
A computer-aided design tool for the optimization of three-dimensional integrated lens antennas (ILAs) is described. The optimization procedure is based on a genetic algorithm (GA) coupled to the hybrid geometrical/physical optics (GO/PO) method of analysis. It is the first time that this global numerical search technique has been applied to design 3-D shaped ILAs. To validate the proposed methodology and the numerical algorithms, two single-material ILAs are optimized and fabricated at 28 GHz. They radiate a sectoral beam and an elliptical Gaussian beam, respectively. The lens prototypes are fed by an aperture-coupled microstrip patch antenna. The influence of the lens dimensions and internal reflections on the far-field radiation patterns is also highlighted when designing shaped lenses. Comparison between experiments and numerical predictions (GO/PO and finite-difference time-domain) successfully validates our design tool
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Xidong Wu, George V. Eleftheriades, T.E. van Deventer-Perkins · IEEE Transactions on Microwave Theory and Techniques · 2001 · 202 citations