A Calculation Method of Thermosolid Electromagnetic Three-field Coupling for Reflector Antenna

Abstract

The invention discloses a thermosetting electromagnetic three-field coupling calculation method of a reflector antenna, relates to the technical field of reflector antenna analysis, and aims to provide a high-precision, simple and practical calculation method. The calculation method of the present invention mainly includes the following process: establish the antenna finite element model and calculate the temperature gradient distribution in different directions, obtain the solid field result after solving, and then analyze and synthesize the surface precision; analyze and synthesize the reflection surface and feed source deformation data Through processing and electromagnetic analysis, the coupling of the reflector antenna from the thermal field to the solid field and the electromagnetic field is realized. Compared with the prior art, the invention has the characteristics of high precision, short period and simple data processing, and is especially suitable for the design, index budget and checking of various reflector antennas.

Description

Technical field [0001] The present invention relates to the field of reflecting surface antenna analysis, in particular, refers to a thermosetting electromagnetic three-scenario-coupling calculation method of a reflective surface antenna, which can be used for a single reflective surface antenna or a double reflective surface antenna thermal field or a temperature field, solid field, and electromagnetic field. Coupling calculations, especially for index budget and performance analysis of reflective surface antennas. Background technique [0002] The reflective surface antenna is widely used in communication, measurement and control and radio astronomical fields due to strong directionality. Reflective surface antennas, especially the reflective surface antenna operated in high frequency sections, to accurately budget its technical indicators in the design demonstration, where the most critical is the effect of temperature on the surface accuracy of the antenna and its integrated ...

AI Technical Summary

Problems solved by technology

This method is only some preliminary performance estimation. For large-scale and high-precision reflector antennas, this method will cause very large errors in calculation results and cannot truly reflect the three-field coupling problem. It has the following defects:

For reflector antennas with different calibers, different types, different geographical locations, and different materials that appear in the project, there is a lack of reference values

[0007] (2) The numerical simulation analysis of the temperature field given in the existing literature is too cumbersome, especially in order to reduce the amount of calculation, the model has been simplified a lot, and for the conduction, radiation and convection in the thermal analysis process, do A lot of assumptions are made, which reduces the credibility of the calculation results

[0008] (3) Some literatures mention the use of temperature sensors to measure the antenna temperature, but this method is not operable in the design demonstration stage

[0009] (4) The prior art does not provide a three-field coupling analysis method

Due to the many uncertainties in the modeling process and the influence of environmental factors, the error of the calculation results will increase.

[0013] (3) The method of determining the temperature field through measured data is not suitable for the design and development stage of the project

The structure composition and operating environment of the reflector antenna are complex, which limits the use of existing software processes

[0017] (3) The application background of the above methods and the reflector antenna belong to different fields, and the methods and processes cannot meet the performance analysis of the reflector antenna

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