Genetic algorithm based antenna structure design method

Abstract

The invention relates to the field of antenna structures, in particular to a genetic algorithm based antenna structure design method. The method comprises the steps of arranging an antenna structure optimization formula; by taking all chromosomes of a previous genetic generation as initial chromosomes of a current genetic generation, forming a first population of the current genetic generation; calculating a selection probability of each chromosome of the first population to form a second population of the current genetic generation; performing crossover operation and mutation operation on chromosomes of the second population to form a third population of the current genetic generation; and presetting a termination genetic generation with sufficient generations, and if the current genetic generation is the termination genetic generation, outputting a chromosome with the highest correlation property in the third population and a target function of the chromosome. The genetic algorithm based antenna structure design method is designed and an initial genetic generation is obtained in an optimal solution region of an antenna structure optimization formula, so that the universality of feasible solutions is improved, the calculation amount is reduced, and the calculation precision and stability of results are enhanced.

Description

technical field [0001] The invention relates to the field of antenna structures, in particular to a genetic algorithm-based antenna structure design method. Background technique [0002] Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology based on the radio frequency principle that emerged in the 1990s. Compared with other automatic identification technologies commonly used at present, RFID has high precision, such as barcode, magnetic card, contact IC card, etc., which has small size, various shapes, anti-pollution ability, good durability, good penetrability and repeatability The advantages of high use and safety. With the advancement of science, RFID products have been widely used in society, economy, national defense and many other fields, such as highway toll system, logistics and supply chain management system, access control system, anti-counterfeiting and security control system, assembly line production automation, ...

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Problems solved by technology

[0006] 1. The initial value needs to be given during the calculation, so different initial values ​​may give different search results, and it is difficult to obtain the global optimal solution;

[0007] 2. Each step of calculation needs to solve one or two quadratic programming sub-problems to obtain the iterative direction. The calculation workload is heavy and it is difficult to apply to large-scale problems;

[0008] 3. The quadratic programming subproblem generated during the iteration process may be unsolvable and interrupt the calculation process. Although other measures can be used to redefine the iteration direction, it will inevitably increase the complexity of the algorithm and increase the workload of calculation.

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