Abstract
An autonomous modeling design method for microstrip units is proposed, which can obtain a high precision reflection phase in the center of any frequency band. Specifically, the metal layer pattern area of the microstrip unit is split up into microgrids. Then, whether these grids are affixed to the metal sheet is taken as the optimization object, and the unit reflection phase is taken as the optimization target, and a machine learning algorithm is given for optimization. The modeling and simulation results show that the microstrip unit can obtain a high-precision reflection phase at the target frequency and have flat phase-frequency characteristics in a wide neighbor band, which lays a good foundation for the precise design and application of a variety of wideband metasurfaces.
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