Electromechanical integration optimization design method for umbrella-shaped antenna under optimal focal distance

Abstract

The invention discloses an electromechanical integration optimization design method for an umbrella-shaped antenna under an optimal focal distance. The method comprises the steps of inputting a geometrical parameter, a material parameter and an electrical parameter of the umbrella-shaped antenna; calculating the optimal focal distance of the umbrella-shaped antenna; calculating an ideal antenna far electric field under the optimal focal distance; calculating the number of segments of antenna ribs; calculating coordinates of points on the ribs; calculating the coordinates of the points between the adjacent ribs; generating all node coordinates of the umbrella-shaped antenna; establishing a structure finite element model of the umbrella-shaped antenna under the optimal focal distance; generating first-order and second-order coefficient matrixes of total electrical property under the optimal focal distance; solving the structure finite element model under the optimal focal distance; approximately calculating a variation of the far electric field of the umbrella-shaped antenna under the optimal focal distance; calculating the far electric field of the umbrella-shaped antenna under the optimal focal distance; judging whether the electrical property meets the requirement; outputting an antenna structure design scheme; and updating the antenna parameters. According to the method, surface patch splicing characteristics of the umbrella-shaped antenna are considered, the electrical property under the optimal focal distance is acquired based on a second-order approximate calculation formula, and the electromechanical integration optimization design efficiency can be improved.

Description

Electromechanical integration optimization design method of umbrella antenna under optimal focal length technical field The invention belongs to the technical field of radar antennas, and in particular relates to an electromechanical integration optimization design method of an umbrella-shaped antenna under an optimal focal length in the field of radar antennas. Background technique Umbrella antenna composed of antenna ribs, metal reflective wire mesh, tension cable net, etc. is a kind of spaceborne antenna structure. Due to its advantages of simple structure, light weight, and low cost, umbrella antennas have broad application prospects in aerospace applications. The umbrella antenna is affected by the space load during the in-orbit process, which will cause deformation of the antenna structure, which will affect the realization of the electrical performance of the antenna. Therefore, in view of the deterioration of the electrical performance of the umbrella antenna on o...

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Problems solved by technology

However, it does not give a certain design method for the rapid calculation of the electrical performance of the umbrella antenna

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