A Design Method for Square Ring Array Electromagnetic Absorber Combining Equivalent Circuit and Genetic Algorithm

Abstract

The present invention proposes a fast and efficient method for designing an absorber based on a square ring array—a square ring array equivalent circuit combined with a genetic algorithm. In this method, based on the equivalent circuit model of the lossless square ring array, the two parameters of resistance loss and equivalent dielectric constant are introduced, and the equivalent circuit model and calculation formula of the single / double ring array with the center loaded lumped resistance are obtained; Then combined with the transmission line theory, the equivalent circuit of the multilayer structure absorber is finally deduced; finally, on the basis of the equivalent circuit, the performance of the structure is optimized by genetic algorithm, forming a complete optimization design process. This method can design multi-layer absorbers based on square ring arrays, and can define design goals according to actual needs, and can freely design broadband low-profile absorbers. Using this method to design the absorber, the time is short, the error is small and the efficiency is high.

Description

technical field [0001] The invention belongs to a design method of an electromagnetic absorber, in particular to a design method of a square ring array electromagnetic absorber that combines equivalent circuits and genetic algorithms. Background technique [0002] In the increasingly important stealth and electromagnetic compatibility (EMC) technology, the role and status of electromagnetic wave absorbing materials are very prominent, and have become the magic weapon and secret weapon of electronic countermeasures in modern military. At present, the circuit analog absorber is widely concerned as a structural absorbing material. A common structure in the circuit simulation absorber is composed of a resistive sheet composed of periodic metal strips, grids, and sheets in the absorbing material. [0003] The equivalent circuit can be used to analyze and design the inductance, capacitance and other parameters of the resistor, but it is often difficult to obtain an accurate equiv...

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Problems solved by technology

[0006] However, there is no design method for square ring array electromagnetic absorbers that combines equivalent circuits and genetic algorithms in the prior art.

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