Thermal Power Determination Method for Spaceborne Active Phased Array Antenna Components Based on Electromechanical Coupling

Abstract

The invention discloses a method for determining heat power consumption of a satellite-borne active phased-array antenna assembly based on electromechanical coupling. The method includes the steps that a structure parameter, a material attribute and an electromagnetic parameter of an antenna are determined; a heat parameter of the T / R assembly is determined; the antenna array element phase center is determined; an antenna heat model is set up, heat load and boundary conditions are applied, and the antenna temperature field distribution in a space environment is calculated; the heat unit type is converted; an antenna structure finite element model is set up, a temperature load and structural constraint are applied, and antenna array face heat deformation is calculated; an antenna phase reference point is determined, array element phase center node displacement is extracted, and gain loss of the deformed antenna is calculated based on an electromechanical coupling model; whether the gain loss exceeds the allowed range or not is judged, and the heat parameter of the T / R assembly is modified; the maximum value of heat power consumption of the T / R assembly is determined. Heat power consumption of the satellite-borne active phased-array antenna assembly can be effectively determined, design of the satellite-borne active phased-array antenna assembly is guided, and assembly position layout can be guided according to antenna structure temperature field distribution.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a method for determining thermal power consumption of a spaceborne active phased array antenna component based on electromechanical coupling. It can be used to determine the maximum thermal power consumption of spaceborne active phased array antenna components, and can also predict the electrical performance of the antenna according to the thermal power consumption of the components, which has guiding significance for the design and layout of antenna components. Background technique [0002] Since the 1950s, with the rapid development of space-borne antennas, the performance requirements for multi-functional, multi-band, long-distance, and high-power antennas have become higher and higher. However, small-aperture, low-gain antennas can no longer meet the demand for large data transmission capacity, and spaceborne active phased arrays have been widely researched and applied since...

AI Technical Summary

Problems solved by technology

Numerical methods are mostly used in this research, such as the literature Verpoorte J, Schippers H, Vos G.Technology for conformal load-bearing antennas on aircraft structures[J]. direction diagram, the process is cumbersome and time-consuming

In short, none of the above methods can directly predict the influence of the thermal power consumption of the component on the electrical performance

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