Reflector antenna face plate modeling method based on multi-scale fractal function

Abstract

The invention discloses a reflector antenna face plate modeling method based on a multi-scale fractal function. The reflector antenna face plate modeling method is characterized by comprising the following steps: manufacturing a template; measuring the roughness of the face plate of the template; seeking a scale range with fractal characteristics on the template, and determining the scale-free region of the template; determining the scale, the boundary frequency, the fractal dimension D value and the characteristic length G value of the fractal function used in template modeling, as well as a mathematical model used for simulating the fractal function; checking the accuracy of the mathematical model. The reflector antenna face plate modeling method provided by the invention has the benefits as follows: main parameters of the fractal function are determined according to data actually measured on the surface of the antenna, and the accuracy of the mathematical model is ensured; during a modeling process, the levels of the fractal function are determined according to the power frequency spectrum of discrete date actually measured, the lowest frequency, the highest frequency and the boundary frequency of the multi-scale fractal function are determined according to the working frequency of the antenna, the high efficiency during the modeling process is ensured, and a foundation for improving the accuracy and the efficiency of analysis to the modeling of the reflector antenna is paved.

Description

Technical field [0001] The invention relates to a reflective surface antenna panel modeling method, in particular to a reflective surface antenna panel modeling method based on a multi-scale fractal function, and belongs to the field of antenna technology. Background technique [0002] The reflector antenna is a typical electromechanical integrated electronic equipment product. With its development towards high frequency band, high gain, high reliability and light weight, the interaction and mutual influence between its structural displacement field and electromagnetic field become more and more obvious , The electrical performance of the antenna is greatly restricted due to the unclear relationship between the two fields. Therefore, it is necessary to deeply study the relationship between the two fields and realize the electromechanical comprehensive analysis of the reflector antenna. The reflective surface of the reflector antenna is not only the main structure of the antenna,...

AI Technical Summary

Problems solved by technology

The advantage of this type of method is that the mathematical structure of the function used is simple and clear, which is convenient for subsequent calculations, and it can also meet the basic electrical performance calculation accuracy requirements for low-frequency reflector antennas; Features; the parameters used by periodic functions and random functions are not "intrinsic parameters", and are related to measuring instruments and sampling lengths; the use of such functions for simulation does not consider the influence of scale

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